Note: A/TZONE 950/850 communicating thermostats MUST be used for Variable Speed Outdoor units.

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1 Service Facts Variable Speed Outdoor Compatible Convertible Air Handlers TAM8C0A24V21CA TAM8C0B30V21CA TAM8C0C36V31CA TAM8C0C42V31CA TAM8C0C48V41CA TAM8C0C60V51CA Note: A/TZONE 950/850 communicating thermostats MUST be used for Variable Speed Outdoor units. SAFETY WARNING Note: Graphics in this document are for representation only. Actual model may differ in appearance. Note: For use with BAYEV or BAYW series heaters ONLY Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment. October 2013 AM8-SF-1J

2 SAFETY SECTION AIR HANDLERS Important This document contains a wiring diagram, a parts list, and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work. WARNING HAZARDOUS VOLTAGE! Failure to follow this Warning could result in property damage, severe personal injury, or death. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. CAUTION GROUNDING REQUIRED! Failure to inspect or use proper service tools may result in equipment damage or personal injury. Reconnect all grounding devices. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. WARNING LIVE ELECTRICAL COMPONENTS! Failure to follow this Warning could result in property damage, severe personal injury, or death. Follow all electrical safety precautions when exposed to live electrical components. It may be necessary to work with live electrical components during installation, testing, servicing, and troubleshooting of this product. WARNING PRESSURIZED REFRIGERANT! Failure to follow this Warning could result in personal injury System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening the system. Do no use non-approved refrigerants or refrigerant substitutes or refrigerant additives. CAUTION SHARP EDGE HAZARD! Failure to follow this Caution could result in property damage or personal injury. Be careful of sharp edges on equipment or any cuts made on sheet metal while installing or servicing. Important: Panel damage can occur with prolonged exposure to POE lubricants. Air handler front panels that come in contact with POE oil must be washed immediately with soapy water Trane AM8-SF-1J

3 PRODUCT SPECIFICATIONS MODEL TAM8C0A24V21CA TAM8C0B30V21CA TAM8C0C36V31CA RATED VOLTS/PH/HZ /1/ /1/ /1/60 RATINGS (a) See O.D. Specifications See O.D. Specifications See O.D. Specifications INDOOR COIL Type Plate Fin Plate Fin Plate Fin Rows F.P.I Face Area (sq. ft.) Tube Size (in.) 3/8 3/8 3/8 Refrigerant Control EEV EEV EEV Drain Conn. Size (in.) (b) 3/4 NPT 3/4 NPT 3/4 NPT DUCT CONNECTIONS See Outline Drawing See Outline Drawing See Outline Drawing INDOOR FAN Type Centrifugal Centrifugal Centrifugal Diameter-Width (In.) 11 x 8 11 x x 10 No. Used Drive No. Speeds Direct Variable Direct Variable Direct Variable vs. in. w.g. See Fan Performance Table See Fan Performance Table See Fan Performance Table No. Motors H.P. 1 1/2 1 1/2 1 1/2 Motor Speed RPM Variable ECM Variable ECM Variable ECM Volts/Ph/Hz /1/ /1/ /1/60 F.L. Amps FILTER Filter Furnished? No No No Type Recommended Throwaway Throwaway Throwaway No.-Size-Thickness 1 16 x 20 1 in x 20 1 in x 20 1 in. REFRIGERANT R-410A R-410A R-410A Ref. Line Connections Brazed Brazed Brazed Coupling or Conn. Size-in. Gas 3/4 3/4 7/8 Coupling or Conn. Size-in. Liq. 3/8 3/8 3/8 DIMENSIONS H x W x D H x W x D H x W x D Crated (In.) 51 x 20 x x 23.5 x x 25.5 x 24.5 Uncrated 49.9 x 17.5 x x 21.3 x x 23.5 x 21.8 WEIGHT Shipping (Lbs.)/Net (Lbs.) 126/ / /146 (a) These Air Handlers are AHRI certified with various Split System Air Conditioners and Heat Pumps (AHRI STANDARD 210/240). (b) 3/4 Male Plastic Pipe (Ref.:ASTM ) AM8-SF-1J 3

4 PRODUCT SPECIFICATIONS MODEL TAM8C0C42CV31CA TAM8C0C48V41CA TAM8C0C60V51CA RATED VOLTS/PH/HZ /1/ /1/ /1/60 RATINGS (a) See O.D. Specifications See O.D. Specifications See O.D. Specifications INDOOR COIL Type Plate Fin Plate Fin Plate Fin Rows F.P.I Face Area (sq. ft.) Tube Size (in.) 3/8 3/8 3/8 Refrigerant Control EEV EEV EEV Drain Conn. Size (in.) (b) 3/4 NPT 3/4 NPT 3/4 NPT DUCT CONNECTIONS See Outline Drawing See Outline Drawing See Outline Drawing INDOOR FAN Type Centrifugal Centrifugal Centrifugal Diameter-Width (In.) 11 x x x 10 No. Used Drive No. Speeds Direct Variable Direct Variable Direct Variable vs. in. w.g. See Fan Performance Table See Fan Performance Table See Fan Performance Table No. Motors H.P. 1 1/2 1 3/4 1 1 Motor Speed RPM Variable ECM Variable ECM Variable ECM Volts/Ph/Hz /1/ /1/ /1/60 F.L. Amps FILTER Filter Furnished? No No No Type Recommended Throwaway Throwaway Throwaway No.-Size-Thickness 1 22 x 20 1 in x 20 1 in x 20 1 in. REFRIGERANT R-410A R-410A R-410A Ref. Line Connections Brazed Brazed Brazed Coupling or Conn. Size-in. Gas 7/8 7/8 7/8 Coupling or Conn. Size-in. Liq. 3/8 3/8 3/8 DIMENSIONS H x W x D H x W x D H x W x D Crated (In.) 58 x 25.5 x x 25.5 x x 25.5 x 24.5 Uncrated 56.9 x 23.5 x x 23.5 x x 23.5 x 21.8 WEIGHT Shipping (Lbs.)/Net (Lbs.) 162/ / /163 (a) These Air Handlers are AHRI certified with various Split System Air Conditioners and Heat Pumps (AHRI STANDARD 210/240). (b) 3/4 Male Plastic Pipe (Ref.:ASTM ) 4 AM8-SF-1J

5 WIRING D803382P08REV02 AM8-SF-1J 5

6 SEQUENCE OF OPERATION FOR TAM8 Note: When used with variable speed outdoor units, indoor airflow and EEV starting position is controlled by the outdoor unit IVSC through the data line between the units. Use variable speed outdoor Sequence of Operation in conjunction with the TAM8 Sequence of Operation! Abbreviations AFC = Airflow Control EVC = Expansion Valve Control EEV = Electronic Expansion Valve EHC = Electric Heat Control HHC= Hydronic Heat Control This unit as shipped is ONLY compatible with Trane and American Standard communicating thermostats and OD units. (24VAC thermostats cannot be used) With the addition of a BAYCC24VK01 accessory, this unit can be compatible with a 24VAC single or multistage heat pump or air conditioner. The installing and servicing technician should have an understanding of the sequence of operation to be able to properly setup and diagnose functions of the air handler. See unit, auxiliary heat, and field wiring diagrams for additional information. Continuous Fan Important: If the indoor air exceeds 60% relative humidity or simply feels uncomfortably humid, it is recommended that the indoor fan only be used in the AUTO mode. 1. When a fan request is received from the thermostat, the AFC sends a command to the serial communicating blower motor to run. Airflow can be adjusted through the thermostat. 2. Humidity Control When enabled in the thermostat, this feature will disable any blower off delays and disable continuous fan mode when the humidity is above the dehumidification setpoint. This will help prevent coil condensation from being evaporated back into the air stream. Cooling Mode 1. When a request for 1st stage cooling is received, the AFC sends a command to the serial communicating blower motor to run at 1st stage cooling airflow. (Delay profiles from the thermostat may change blower motor timing and actual airflow demand) 2. The EVC will receive input from the two temperature sensors and start to control 1st stage superheat. 3. When a request for 2nd stage cooling is received, the AFC sends a command to the serial communicating blower motor to run at 100 % cooling airflow. 4. The EVC will now control superheat for 2nd stage. 5. When a request for cooling is removed, the AFC will turn off the blower motor after any user selected fanoff delays have expired. Note: Delay profiles from the thermostat may change blower motor timing and actual airflow demand Heat Pump (compressor only) 1. When a request for 1st stage heat is received, the AFC sends a command to the serial communicating blower motor to run at 1st stage heating airflow. 2. Humidifier contacts close on demand from the thermostat. 3. The EVC will drive the EEV to the heating position and refrigerant will flow in the reverse cycle. 4. When a request for 2nd stage mechanical heat is received, the AFC sends a command to the serial communicating blower motor to run at 100 % heating airflow. 5. When a request for heat pump is removed, the AFC will turn off the blower motor after any user selected fan-off delays have expired. Note: Delay profiles from the thermostat may change blower motor timing and actual airflow demand Electric Heat 1. When a request for electric heat is received, the AFC communicates to the EHC how much demand for auxiliary heat is being requested. 2. The EHC determines the number of elements that will be used for this request and sends a message to the AFC for proper airflow (The EHC determines the amount of heat available per stage by either factory programming or by the kw jumper position). 3. The AFC sends a command to the serial communicating blower motor to run proper airflow and close the blower interlock relay on the EHC. 4. Humidifier contacts close on demand from the thermostat. 5. As demand from the thermostat increases, the EHC will communicate to the AFC the required airflow when energizing additional relays. Note: The EHC has lead-lag or rotating logic built in that energizes the electric heat relays based upon cycle counts. To verify operation of all heating elements, switch thermostat to Emergency Heat and raise the setpoint of the thermostat at least 5 degrees above the actual room temperature. Hydronic Heat 1. When the request for hydronic heat is received, the AFC communicates to the HHC how much auxiliary heat is being requested. 6 AM8-SF-1J

7 SEQUENCE OF OPERATION FOR TAM8 2. The HHC will close the K1 relay contacts that enable the boiler or circulating pump to start. 3. The HHC sends a signal to the AFC when the inlet water temperature reaches 100 degrees for a maximum of 60 seconds, and then determines the amount of airflow needed for the heat demand. 4. The AFC sends a command to the serial communicating blower motor to run at the requested. 5. Humidifier contacts close on demand from the thermostat. 6. As demand from the thermostat increases, the HHC will communicate to the AFC matching airflow requirements. Defrost 1. The OD unit will initiate defrost and send a message to the AFC. 2. The AFC will communicate to the EVC that the OD is in defrost and the EVC will start to control the correct superheat. 3. Electric or hydronic heat will be energized to help temper the air (Auxiliary heat options for defrost can be adjusted through the Display Assembly Configuration Menu). Optional Condensate Switch 1. An optional OEM Condensate Switch can be installed within the unit. This switch is only available through the National Distribution Center or Global Parts. 2. OEM Condensate Switch contacts are Normally Open and will close when water level inside the unit rises. A closed switch will de-energize the OD unit. 3. The OEM Condensate Switch is only operational during the cooling mode and is not operational during heating or defrost modes. Note: Standard aftermarket condensate switches (Normally Closed) can be wired in series with the "External Switch" contacts on the AFC. Important: The switch action must be selected in the Configuration Menu section of the Display Assembly to either "Disable Cool" or "Disable All". Freeze Protection 1. The EVC control has the ability to sense when the indoor coil is beginning to ice. If this event should occur, the AFC will send a message to de-energize the OD unit. 2. The indoor blower motor will continue running to aid in defrosting the coil. 3. After 5 minutes, the OD will be turned back on (*CONT900 and the 1st release of the *ZONE950 will disable the indoor blower motor and OD unit for 30 minutes). Unit Test Mode Unit Test Mode will exit if any demand is given to the unit. To enter Unit Test Mode: 1. Set System Switch on comfort control to Off 2. Scroll to the Control Menu on the Display Assembly 3. Scroll down to the Unit Test selection and push the "Enter" key Sequence of Unit Test Mode (OD unit is not energized during the Unit Test Mode) 1. EVC drives the EEV motor to the 1st stage position for 5 seconds 2. EVC drives the EEV motor to the 2nd stage position for 5 seconds 3. AFC energizes the blower at 50% and then continues to ramp until it reaches 100% cooling airflow. 4. Humidifier contacts close when the blower starts 5. EHC energizes the circuit relay(s) for 5 seconds each in 5 second intervals. 6. All relays de-energize and the blower shuts off five seconds after the last bank of heat is energized. 7. HHC energizes its K1 relay that interfaces with the boiler system or circulating pump. The blower continues to run for 30 seconds and then K1 relay contacts open and the blower shuts off. If an error occurs during the Unit Test Mode, the Fault LED will flash a code and continue the test. AM8-SF-1J 7

8 Fault Reporting Control boards in this unit store active and historical faults. Each control board will report active faults continuously and will report the last four faults stored after a power cycle of the unit. See Fault Table section for list of fault codes. The active and historical faults can also be accessed through the Alert Menu in the Display Assembly. Clearing Fault History Option 1: 1. Scroll to the Alert Menu in the Display Assembly. 2. Scroll to the Alert History section. 3. Scroll to the Clear History selection and push the Enter key. At the "Are You Sure" question, push Enter again. Option 2: 1. Press and hold the Unit Test Button for seconds. 2. Release the Unit Test button and wait 5 seconds 3. Cycle 230VAC power to the unit. (the blower panel can be removed to achieve this) J6 24 VAC J4 AFC Board J11 EVC Board 13.8 VDC Control Layout - Refrigerant Jumper Refrigerant Jumper J7 Verify the system is set to R-410A. The jumper can be set to R410A or R22 on the Refrigerant Jumper J7 located on the Expansion Valve Control Board (EVC). Factory default is R-410A. The power must be shut off and then re-applied in order for the EVC to recognize the change. J7 Jumper J7 J4 OPEN TEST CLOSE D14 STATUS D16 UNIT D18 FAULT 3 MH4 2 1 R410 R22 R74 C28 MH1 D15 C27 D17 D19 R70 D22 D21 1 R60 C26 R57 R56 R55 R53 R54 R52 R51 P/N LABEL D23 R8 R17 R25 R29 C41 C31 R79 D25 L4 C14 R75 R76 D26 R21 R39 C15 U4 R80 PGC PGD VS S VDD CLR R32 R33 R81 J5 D11 D24 C11 BARCODE R45 R37 C18 R82 C34 R41 R88 R42 X1 C12 C17 R84 R31 R47 R90 C21 R91 Q9 U3 R46 R10 R11 C13 L5 R87 R30 C35 C5 R C C TRA Electronic Expansion Valve Control (EVC) 8 AM8-SF-1J

9 OUTDOOR MULTIPLIER (TONS) 1.5 tons 2 tons 2.5 tons 3 tons COOLING SETTING /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton POWER TAM8C0A24 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 77 / NA 542 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 103 / NA 509 / NA 132 / NA 604 / NA 156 / NA 688 / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 133 / NA 445 / NA 156/ NA 559 / NA 181 / NA 649 / NA 212 / NA 527 / / / / / / / / / / / / / / / / / / / / / / / / 531 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton Factory Setting Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA TAM8C0A24 Minimum Heating Airflow Settings BAYEVAC10BK1AA BAYEVAC10LG1AA Torque mode will reduce airflow when static is above approximately 0.3" water column. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA TAM8C0A24V21CA 638/ / (a) / /713 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE FOR APPROVED COMBINATIONS Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. (a) Heater not qualified for 208V when installed in horizontal left position without Heat Pump AM8-SF-1J 9

10 OUTDOOR MULTIPLIER (TONS) 1.5 tons 2 tons 2.5 tons 3 tons COOLING SETTING /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton POWER TAM8C0B30 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER EXTERNAL STATIC PRESSURE / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 71/ NA 527 / NA 87 / NA 612 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 98 / NA 493 / NA 117 / NA 590 / NA 134 / NA 678 / NA 154 / NA 568 / NA 130 / NA 705 / NA 161 / NA 811 / NA 191 / NA 914 / / / / / / / / / / / / / / / / / / / NA 129 / NA 472 / NA 150 / NA 563 / NA 167 / NA 656 / NA 189 / NA 542 / NA 163 / NA 684 / NA 197 / NA 797 / NA 231 / NA 904 / NA 270 / NA 712 / NA 205 / NA 876 / NA 260 / NA 1008 / NA 315 / NA 1134 / NA 376 / NA 870 / NA 257 / NA 1059 / NA 339 / NA 1201 / / / / 345 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton Factory Setting Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA TAM8C0B30 Minimum Heating Airflow Settings BAYEVAC10BK1AA BAYEVAC10LG1AA Torque mode will reduce airflow when static is above approximately 0.35" water column. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA TAM8C0B30V21CA 723/ / / / / /1105 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. 10 AM8-SF-1J

11 OUTDOOR MULTIPLIER (TONS) 2 tons 2.5 tons 3 tons 3.5 tons COOLING SETTING /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton POWER TAM8C0C36 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER EXTERNAL STATIC PRESSURE / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 120 / NA 738 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 153 / NA 735 / NA 197 / NA 802 / / / / / NA 193 / NA 931 / / / 652 / / / / / / / / / / / / / / / / / / / 444 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton Factory Setting Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA TAM8C0C36 Minimum Heating Airflow Settings BAYEVAC10BK1AA BAYEVAC10LG1AA Torque mode will reduce airflow when static is above approximately 0.35" water column. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA TAM8C0C36V31CA 876/ / / / / /1339 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. AM8-SF-1J 11

12 OUTDOOR MULTIPLIER (TONS) 2.5 tons 3 tons 3.5 tons 4 tons COOLING SETTING /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton POWER TAM8C0C42 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER EXTERNAL STATIC PRESSURE / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / NA 207 / NA 944 / / / / / / / / / 747 / / / / / / / / / / / / / / / / / / / / / 453 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton Factory Setting Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA TAM8C0C42 Minimum Heating Airflow Settings BAYEVAC10BK1AA BAYEVAC10LG1AA Torque mode will reduce airflow when static is above approximately 0.35" water column. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA TAM8C0C42V31CA 978/ / / / / / /1610 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. 12 AM8-SF-1J

13 OUTDOOR MULTIPLIER (TONS) 3 tons 3.5 tons 4 tons 4.5 tons** COOLING SETTING /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton POWER TAM8C0C48 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER EXTERNAL STATIC PRESSURE / / / / / / / / / / / / / / /1669 / / / / / / / / / / / / 1688 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 1793 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 631 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton Factory Setting ** Not an actual OD size Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. Torque mode will reduce airflow when static is above approximately 0.4 water column. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA TAM8C0C48 Minimum Heating Airflow Settings BAYEVAC10BK1AA BAYEVAC10LG1AA If the air handler is applied in downflow or horizontal configurations, the airflow should not exceed Airflow above 2000 could result in water blowoff. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA BAYEVCC25BK1AA TAM8C0C48V41CA 1063 / / / / / / / / 1813 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. AM8-SF-1J 13

14 OUTDOOR MULTIPLIER (TONS) 3.5 tons 4 tons 4.5 tons ** 5 tons COOLING SETTING /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton /ton 370 /ton /ton /ton POWER TAM8C0C60 PERFORMANCE CONSTANT MODE / CONSTANT TORQUE MODE EXTERNAL STATIC PRESSURE (Constant / Constant Torque) HEATING SETTING POWER EXTERNAL STATIC PRESSURE / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 930 Factory Setting ** Not an actual OD size Status LED will blink once per 100 requested. In torque mode, actual airflow may be lower. Torque mode will reduce airflow when static is above approximately 0.4 water column. MODEL NO. BAYEVAC04BK1AA BAYEVAC04LG1AA BAYEVAC05BK1AA BAYEVAC05LG1AA BAYEVAC08BK1AA BAYEVAC08LG1AA 1046 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 941 /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton /ton If the air handler is applied in downflow or horizontal configurations, the airflow should not exceed Airflow above 2000 could result in water blow-off. All heating modes default to Constant. Cooling airflow values are with wet coil, no filter TAM8C0C60 MINIMUM HEATING HEATER MATRIX BAYEVAC10BK1AA BAYEVAC10LG1AA BAYEVAC10LG3AA BAYEVBC15BK1AA BAYEVCB15LG3AA BAYEVBC20BK1AA BAYEVCC25BK1AA TAM8C0C60V51CA 1063 / / / / / / / (a) / 1813 WITHOUT HEAT PUMP / WITH HP SEE AIR HANDLER NAMEPLATE Note: Minimum auxiliary heating airflow is automatically configured by the air handler model and the auxiliary heater model number. This is not field adjustable. (a) Heater not qualified for 208V when installed in horizontal left pposition without Heat Pump 14 AM8-SF-1J

15 HEATER ATTRIBUTE DATA TAM8C0A24V21CA 240 Volt 208 Volt No. of Heater Model No. Capacity Heater Minimum Maximum Capacity Minimum Maximum Circuits Heater Amps Amps per Circuit Overload Circuit Overload kw BTUH per Circuit Circuit Ampacity Protection kw BTUH Ampacity Protection No Heater ** ** 4 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC10++1 (a) BAYEVAC10LG3 1-3 PH Note: ** Motor Amps (a) Heater not qualified for 208V when installed in horizontal left position without Heat Pump Heater Model No. No. of Circuits Capacity TAM8C0B30V21CA 240 Volt 208 Volt Heater Amps per Circuit Minimum Circuit Ampacity Maximum Overload Protection Capacity kw BTUH kw BTUH Heater Amps per Circuit Minimum Circuit Ampacity No Heater ** ** 4 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC BAYEVAC10LG3 1-3 PH BAYEVBC15LG3 1-3 PH BAYEVBC15BK1 - Circuit 1 (a) BAYEVBC15BK1 - Circuit 2 Note: ** Motor Amps (a) MCA and MOP for circuit 1 contains the motor amps 2 Maximum Overload Protection Heater Model No. No. of Circuits Capacity TAM8C0C36V31CA 240 Volt 208 Volt Heater Amps per Circuit Minimum Circuit Ampacity Maximum Overload Protection Capacity kw BTUH kw BTUH Heater Amps per Circuit Minimum Circuit Ampacity No Heater ** ** 4 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC BAYEVAC10LG3 1-3 PH BAYEVBC15LG3 1-3 PH BAYEVBC15BK1 - Circuit 1 (a) BAYEVBC15BK1 - Circuit 2 BAYEVBC20BK1 - Circuit 1 (a) BAYEVBC20BK1 - Circuit 2 Note: ** Motor Amps 2 2 Maximum Overload Protection AM8-SF-1J 15

16 HEATER ATTRIBUTE DATA (a) MCA and MOP for circuit 1 contains the motor amps TAM8C0C42V31CA 240 Volt 208 Volt No. of Heater Model No. Capacity Heater Minimum Maximum Capacity Heater Minimum Maximum Circuits Amps per Circuit Overload Amps per Circuit Overload kw BTUH Circuit Ampacity Protection kw BTUH Circuit Ampacity Protection No Heater ** ** 4 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC BAYEVAC10LG3 1-3 PH BAYEVBC15LG3 1-3 PH BAYEVBC15BK1 - Circuit 1 (a) BAYEVBC15BK1 - Circuit 2 BAYEVBC20BK1 - Circuit 1 (a) BAYEVBC20BK1 - Circuit 2 Note: ** Motor Amps (a) MCA and MOP for circuit 1 contains the motor amps TAM8C0C48V41CA 240 Volt 208 Volt No. of Heater Model No. Capacity Heater Minimum Maximum Capacity Heater Minimum Maximum Circuits Amps per Circuit Overload Amps per Circuit Overload kw BTUH Circuit Ampacity Protection kw BTUH Circuit Ampacity Protection No Heater ** ** 5 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC BAYEVAC10LG3 1-3 PH BAYEVBC15LG3 1-3 PH BAYEVBC15BK1 - Circuit 1 (a) BAYEVBC15BK1 - Circuit 2 BAYEVBC20BK1 - Circuit 1 (a) BAYEVBC20BK1 - Circuit BAYEVCC25BK1 Circuit 1 (a) BAYEVCC25BK1 Circuit 2 BAYEVCC25BK1 Circuit 3 Note: ** Motor Amps (a) MCA and MOP for circuit 1 contains the motor amps 16 AM8-SF-1J

17 HEATER ATTRIBUTE DATA TAM8C0C60V51CA 240 Volt 208 Volt No. of Heater Model No. Capacity Heater Minimum Maximum Capacity Heater Minimum Maximum Circuits Amps per Circuit Overload Amps per Circuit Overload kw BTUH Circuit Ampacity Protection kw BTUH Circuit Ampacity Protection No Heater ** ** 7 15 BAYEVAC BAYEVAC BAYEVAC BAYEVAC BAYEVAC10LG3 1-3 PH BAYEVBC15LG3 1-3 PH BAYEVBC15BK1 - Circuit 1 (a) BAYEVBC15BK1 - Circuit 2 BAYEVBC20BK1 - Circuit 1 (a) BAYEVBC20BK1 - Circuit 2 BAYEVCC25BK1 (b) - Circuit 1 (a) BAYEVCC25BK1 - Circuit 2 BAYEVCC25BK1 - Circuit 3 Note: ** Motor Amps (a) (b) MCA and MOP for circuit 1 contains the motor amps Heater not qualified for 208V when installed in horizontal left position without Heat Pump Note: See Product Data or Air Handler nameplate for approved combinations of Air Handlers and Heaters. Note: Heater model numbers may have additional suffix digits. AM8-SF-1J 17

18 SUBCOOLING ADJUSTMENT System Matched with: Indoor Unit Model No. Outdoor Unit Model No. Subcooling TAM8C0B30V21CA 4A6H6024E/G, 4TWX6024E/G 4A6H7024, 4TWX Single Compressor 2 Stage HP TAM8C0B36V31CA 4A6H6036E/G, 4TWX6036E/G 4A6H7036, 4TWX TAM8C0C48V41CA 4A6H6048E/G, 4TWX6048E/G 4A6H7048, 4TWX TAM8C0B30V21CA 4A7A6024E/G, 4TTX6024E/G 4A7A7024, 4TTX Single Compressor 2 Stage AC TAM8C0C36V31CA 4A7A6036E/G, 4TTX6036E/G 4A7A7036, 4TTX TAM8C0C48V41CA 4A7A6048E/G, 4TTX6048E/G 4A7A7048, 4TTX TAM8C0B30V21CA 4A6Z0024A, 4TWZ0024A, 9 Two Compressor 2 Stage HP TAM8C0C36V31CA 4A6Z0036A/B, 4TWZ0036A/B 10 TAM8C0C48V41CA 4A6Z0048A/B 4TWZ0048A/B 12 TAM8C0C60V51CA 4A6Z0060A, 4TWZ0060A 12 Two Compressor 2 Stage HP TAM8C0B30V21CA 4A7Z0024A, 4TTZ0024A 9 TAM8C0C36V31CA 4A7Z0036A/B, 4TTZ0036A/B 11 TAM8C0C48V41CA 4A7Z0048A/B, 4TTZ0048A/B 12 Notes: 1. Variable Speed Outdoor units must be charged per the outdoor unit instructions. 2. All other matches must be charged per the nameplate charging instructions. MODEL DIM A DISTANCE FROM BELLY BAND TO SHAFT FACE OF MOTOR FOR MINIMUM VIBRATION BLOWER HOUSING BELLY BAND A MOTOR TAM7A0A24H21SC, TAM8C0A24V21CA TAM7A0B30H21SC, TAM8C0B30V21CA TAM7A0C36H31SC, TAM8C0C36V31CA TAM7A0C42H31SC, TAM8C0C42V31CA TAM7A0C48H41SC, TAM8C0C48V41CA TAM7B0C60H51SB, TAM8C0C60V51CA 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 2 3/8 WHEEL A is determined per chart Wheel is centered in Blower Housing 18 AM8-SF-1J

19 Air Handler Control Panel - LEDs WIRE TIE STATUS LED UNIT LED FAULT LED STATUS LED UNIT LED FAULT LED J 7 R410A / R22 J4 OPEN TEST Y2 Y1 O D R B BM COMM STATUS UNIT FAULT STATUS UNIT FAULT J7 2 1 OPEN TEST CLOSE Airflow Control (AFC) J 10 HUM BM LED COMM LED J6 Unit Test J VDC TEST 24 VAC J4 J11 J VDC J2 J 1 To EEV Stator GAS TEMP +12V OVR FLOW EVAP TEMP GND ET Sensor GT Sensor J3 J 6 See Table To Internal Condensate Switch (Optional) Electronic Expansion Valve Control (EVC) J 7 - Motor J8 J VDC J 9 - EHC/HHC 24 VAC 13.8 VDC From Transform er From DC Power Supply Distribution Board J 10 - Display Assem bly 3 R410 R22 AM8-SF-1J 19

20 TAM8 LED Codes AFC BM (Bit Master) LED (GREEN) DESCRIPTION LED LOCATIONS Solid ON Normal Operation WIRE TIE HUM AFC COMM LED (AMBER) DESCRIPTION Device Count Number of communicating devices (a) STATUS LED UNIT LED FAULT LED BM LED COMM LED J6 (a) Examples: communicating thermostat, communicating air cleaner, etc. AFC STATUS LED (GREEN) ON SOLID 1 Flash (per second) Stand-by or idle Multiple Flash DESCRIPTION Power up and during last 4 fault history sequence demand - 1 flash per 100 cfm AFC UNIT LED (BLUE) DESCRIPTION 1 Flash Normal (1 flash every 4 seconds) Rapid SOLID ON Off Communication Busy Error (2 flashes per second) Communications cannot be established with other controls No Power AFC FAULT CODES (RED) DESCRIPTION (a) (b) (c) OFF Solid On No fault Internal control failure 1 24VAC fuse blown 2 PM Data Corrupt or Missing / Motor Mismatch 3 Communication error (a) 4 Blower communication error (Status LED will be ON solid) 5 Internal communication error (refer to Unit LED on EVC, EHC, HHC) (b) (c) 6 Indoor coil air sensor error 8 Twinning error 11 EVC has detected a fault condition (refer to Fault LED on EVC) 12 EHC / HHC has detected a fault condition (refer to Fault LED on EHC / HHC) Error is associated with the ComfortLink II or AccuLink communicating bus. All LED s will be off if power is not applied. If Unit LED on AFC is flashing 2 times/second, AFC is causing the error. Unit LED on suspect control will flash 2 times/second. 20 AM8-SF-1J

21 TAM8 LED Codes EVC STATUS LED (GREEN) (Non Heat Pump Systems) DESCRIPTION Flash 1 Cool mode selected / No active call 2 Active call for 1st stage cooling 3 Active call for 2nd stage cooling (a) EVC STATUS LED (GREEN) (Heat Pump Systems) Flash DESCRIPTION 1 Cool mode selected / No active call 2 Active call for 1st stage cooling or defrost 3 Active call for 2nd stage cooling or defrost (a) 4 Heat mode selected or Thermostat system switch off 5 Active call for 1st stage heating 6 Active call for 2nd stage heating (a) STATUS LED UNIT LED FAULT LED J7 R410A / R22 J4 OPEN TEST CLOSE J11 EVC 24 VAC (a) Single stage OD systems will report 2nd stage flash codes EVC UNIT LED (BLUE) DESCRIPTION 1 Flash Normal (1 flash every 4 seconds) Rapid Communication Busy Error (2 flashes per second) SOLID ON OFF Communications cannot be established with the AFC No Power (a) (b) (c) EVC FAULT (RED) DESCRIPTION POSSIBLE CAUSES OFF No fault 1 Stepper Motor coil has an open circuit or intermittent short Faulty EEV motor / wiring harness Control has detected an internal failure (Replace EEV control, EVC) Evaporator Temperature Sensor (ET) input out of range (Verify resistance, 5VDC output from control) (a) Gas Temperature Sensor (GT) input out of range (Verify resistance, 5VDC output from control) (a) Verify EEV motor & harness resistance. EEV motor drive, motor feedback, or 12v failure Sensor open / shorted, unplugged, wiring harness problem. Verify 5VDC output from control Sensor open / shorted, unplugged, wiring harness problem. Verify 5VDC output from control 5 Stepper Motor Coil is shorted (b) Faulty EEV motor / wiring harness 6 Valve is not responding to a change in position. (Possible stuck valve) Possible stuck valve, check ET/GT calibration System low on charge, liquid line restriction, ET/GT sensor 7 High superheat (Low charge or restriction) calibration Stuck valve, ET/GT sensor calibration, restricted distributor line 10 Low superheat (Check airflow, possible stuck valve) (c) that ET is connected to, check valve leaking Condensate drain switch activated for 100 seconds (Check condensate switch and drain) (b) Indoor frost protection activated (b) TAM8 unit will disable all operation for 30 minutes to allow coil defrost Internal communication fault (All operation is terminated) (Cycle power & check wire terminations) Configuration fault (All operation is terminated) (Cycle power & check if PM error is present) Condensate line clogged, clean switch Low / incorrect airflow, low refrigerant charge, ET sensor calibration. Normal for low ambient cooling Verify harness continuity between J2 of the EVC and J4 of the Distribution Board Check if PM error is present, cycle power to the unit 16 Outdoor status fault (All operation is terminated) Cycle power to the unit, replace EVC if error persists EEV will try to go to a safe position, cooling attempt allowed Cooling Disabled Cooling attempt allowed, 5 consecutive Y calls with same condition disables cooling. AM8-SF-1J 21

22 D23 1 C13 R41 R40 C5 R35 R59 R50 R57 R58 R70 R49 R15 R72 U4 D4 R73 C3 P3 D24 R53 R63 R62 D25 GND TAM8 LED Codes EHC UNIT LED (BLUE) DESCRIPTION 1 Flash Normal (1 flash every 4 seconds) Rapid SOLID ON Off Communication Busy Error (2 flashes per second) Communications cannot be established with the AFC No Power EHC STATUS LED (GREEN) ( Heat Pump Systems) DESCRIPTION 1 1 heater relay energized or stand by (a) 2 2 heater relays energized (b) 3 3 heater relays energized (b) 4 4 heater relays energized (b) 5 5 heater relays energized (b) (a) (b) Standby mode STATUS LED will flash 1 time per second On a call for heat, STATUS LED will flash per the table above every 4 seconds EHC FAULT LED (RED) DESCRIPTION OFF No fault 1 Internal communication error 2 Heat relay stuck open 3 Heat relay stuck closed 4 Non-cycling limit (NTCO) or element open 5 Cycling limit (CTCO) open 6 Configuration error (a) 7 Low Airflow (b) 8 Blower interlock relay stuck open or stuck closed (a) (b) Confirm heater model and kw jumper match Disregard this error on EHC controls prior to CNT06726 (3 relay) and CNT07012 (5 relay) T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 K1 K2 K3 K4 K5 UNIT LED STATUS LED FAULT LED R3 R4 D1 R28 D12 D9 R26 D10 D7 R27 D11 D8 C12 R1 R6 R11 R16 R44 R45 R46 R47 R48 R8 R13 R18 R23 R2 R9 R7 R14 R12 R19 R17 R24 R22 D3 R5 D2 R10 TRANE U.S. INC. UNIT X1 C V U1 S TATUS FAULT U5 U6 U7 D14 D15 R30 D22 R29 D16 D17 R69 P1 AUX P GC P GD VSS VDD MCLR U2 R31 JP1 R66 R36 C7 R34 R37 R65 5KW R64 8KW 10KW 15KW 20KW 25KW P ARK 13.8V DATA A DATA B GND R54 R55 R51 R71 MOV1 R56 R60 R61 P2 R68 D21 U8 D5 R20 U3 R67 T11 C8 R38 +5V D20 D19 C9 C6 D6 R33 T12 R43 C2 C11 C4 R52 R32 K6 R39 U9 R25 C10 R21 22 AM8-SF-1J

23 . TAM8 LED Codes HHC FAULT LED (RED) DESCRIPTION OFF No Fault 1 Internal communication error 2 Water temp is at 38F or lower 3 Water temp sensor is shorted 4 Water temp sensor is open 5 Configuration error (a) 6 Heat demand error (a) Confirm heater model and dip switch configuration HHC Status LED (GREEN) DESCRIPTION 1 per second Standby or idle 2 per second Heating demand is present HHC UNIT LED (BLUE) DESCRIPTION 1 Flash Normal (1 flash every 4 seconds) Rapid SOLID ON Off Communication Busy Error (2 flashes per second) Communications cannot be established with the AFC No Power P1 13.8V DATA A DATA B GND MOV1 13.8VDC D13 K1 P4 D11 C1. R41 R40 C4 R45 R44 +5V D6 R25 R24 R23 R22 C13 R26 Q1 R14 R28 U1 U2 R27 R29 X1 R31 R30 R16 R32 R15 R34 C10 R9 R48 R47 R46 C8 VSS 1 C9 GND P GD R11 P GC AUX C14 R20 P3 TRANE U.S. INC. Pb R39 R8 D8 R10 U3 C2 R1 C3 D7 D9 D10 R37 R12 R13 C5 R33 D16 D18 D12 R7 MCLR VDD R35 C7 C15 R42 R18 R17 R6 FAULT STATUS UNIT D17 D15 D14 1 SW1 C17 P6 C12 R36 R2 R3 R19 R5 R4 C11 R43 C6 C16 P5 D3 D5 D2 D4 D1 FAULT STATUS UNIT AM8-SF-1J 23

24 CCM LED S LED Codes - The three LED lights below appear on the CCM control board. (BAYCC24VK01A) CCM COMM LED (AMBER) DESCRIPTION Device count Number of communicating devices (a) (a) Examples: communicating thermostat, communicating air cleaner, etc. CCM STATUS LED (GREEN) DESCRIPTION 1 Flash per second Idle / Standby 1 Flash per 4 seconds 1st Stage 2 Flash per 4 seconds 2nd Stage CCM FAULT LED (RED) DESCRIPTION 3 Flash Communication Error COM STATUS FAULT H1 R2 K2 K1 K4 K3 R26 R1 1 VR7 VR8 VR10 C21 J1 Y1 Y2 CR43 CR44 C2 P1 C1 CR42 LED5 C32 R44 TRANE U.S. INC LED4 LED3 CR28 C43 R82 R83 R43 C44 R88 + ZR3 COM R45 STATUS FAULT R81 BARCODE U2 U1 C19 L1 TP183 R32 D11 RN1 TP181 C83 C79 C27 R55 VR4 R61 VR1 D19 C26 R57 C36 + C30 CR3 ZR7 Q10 CR51 R73 R71 X1 C77 Q14 R78 R157 CR4 CR1 CR2 CR6 R74 R164 R37 D 1 R158 J2 U6 R62 R59 R60 + C35 H2 C17 C78 R125 R127 LABEL R126 R66 R65 CR26 D4 Q11 C29 R118 H3 C45 R40 R41 J3 C42 R47 C41 R48 R46 R49 CR50 CR52 CR53 CR10 S1 OFF ON HP 1 1 R3 R34 AC 2 STG 2CMP R154 C20 U4 CR9 R87 R98 Q8 Q7 R108 R115 CR5 Q9 TP109 C31 H4 R106 R AM8-SF-1J

25 TAM8 ALERT CODE ADDENDUM Alert Code Alert Group Display Assembly Text A/TCONT900 A/TZONE 950 Notification Level AFC Fault Code EVC Fault Code EHC Fault Code HHC Fault Code Code Alert Description Possible Cause 18 Control failure CNTRL FLT Critical ON Internal Control Error Control fault, replace AFC 19 Twinning fault TWIN Information 8 Air handler twinning error More than one ID unit connected on the communicating bus is not allowed 52 ICAS OPEN N/A N/A Information 6 Indoor air sensor is open Sensor open, unplugged, wiring harness 52 Indoor air sensor error Indoor air sensor error ICAS SHORT 90 Communication busy fault SYS COM CRC Communication inactive fault Communication inactive fault 92 Fuse failure Heater relay 104 fault Heater relay 104 fault 104 Heater relay fault SYS COMM N/A N/A Information 6 Sensor shorted, wiring Indoor air sensor is shorted harness N/A N/A Information 3 Excessive communication R & B to thermostat reversed errors polarity Critical 3 Loss of Heat/Cool demand message Open / Shorted data line / CCM communication error NO SYS CLK Critical 3 Loss of Bit Master Control fault, replace AFC CHECK FUSE EH RLY OPEN# ALL RLY OPEN EH RLY WELD# N/A N/A Critical 1 (a) 24V fuse open error 24VAC circuit short User Display Critical 12 2 Critical Heater interlock relay BL INTLK OP User Display 12 8 fault 105 Heater interlock relay BL INTLK CL fault User Display External EXT SW shutdown OPEN fault User Display PM bad or missing fault PM DATA N/A 114 ID motor error ID MTR PM bad or missing fault 114 PM fault 114 PM fault 114 PM bad or missing fault PM MISSING PM UNIT PM MEM PM MISSING 114 N/A ID motor error MTR PWR HI 114 Demand 123 configuration fault 152 Heater element fault Thermal limit 153 switch fault Information 2 User Display 2 Critical 2 Information 2 Critical 2 Critical 2 User Display 2 EH CONFIG User Display 12 6 EH ELMNT OP# EH CTCO TRIP Heater relay stuck open error Heater relay failure All heater relay stuck open error Heater relay failure Heater Relay Stuck Closed Error Interlock Relay Stuck Open Error Interlock Relay Stuck Closed Error External shutdown input open error PM data corrupt (Operation allowed) Motor HP is < than PM value (Operation not allowed) PM missing with good local copy (Operation allowed) Bad data in PM with good local copy (Operation allowed) Heater relay failure, open element, open non-cycling limit switch Blower interlock relay failure Blower interlock relay failure External float switch, other device open PM error Incorrect VS motor or PM installed PM error PM error Bad data in PM with no local PM error copy (Operation allowed) PM missing with no local copy (Operation not PM error allowed) Motor HP is > than PM value (Operation allowed) Electric heat configuration error Incorrect VS motor or PM installed KW jumper position on PARK (replacement control only) User Display 12 4 Heater element open Low airflow, dirty coil/filter User Display 12 5 Cycling thermal cut-out trip has occurred Low airflow, dirty coil/filter AM8-SF-1J 25

26 TAM8 ALERT CODE ADDENDUM Alert Code Alert Group Display Assembly Text A/TCONT900 A/TZONE 950 Notification Level AFC Fault Code EVC Fault Code EHC Fault Code HHC Fault Code Code Alert Description Possible Cause EH airflow limit fault EH airflow limit fault Indoor electronic expansion valve motor fault Indoor electronic expansion valve motor fault EH OFF/NO AF EH LIM/NO AF EEV MTR EEV MTR System low on SYSTEM1 charge fault 157 Condensate fault 158 Coil freeze fault CONDESAT FLT ID COIL FRST User Display User Display User Display User Display 11 1 Electric heat control locked out because of insufficient airflow Electric heat control is under restricted operation because of insufficient airflow EEV motor fault has been detected for 8 consecutive times and valve is locked out EEV electric motor current indicates open or short User Display 11 7 System 1 - High superheat Critical User Display Condensate overflow condition detected Indoor coil freeze condition detected 159 Unit Bus fault AFC COMM Critical AFC communication error 159 Unit Bus fault EHC COMM User Display 5 1 EHC communication error 159 Unit Bus fault HHC COMM User Display 5 1 HHC communication error 159 Unit Bus fault EVC COMM User Display 5 14 EVC communication error 159 Unit Bus fault Indoor EEV control configuration error Evaporator temperature sensor fault Gas temperature sensor fault Indoor EEV control fault Indoor EEV fault Indoor electronic expansion Valve fault CDA COMM Information 5 CONFIG FLT User Display ET SEN User Display 11 3 GT SEN 161 EEV CNTL FLT EEV CLSE EEV OPEN User Display User Display User Display User Display 11 6 Display Assembly communication error Configuration group index or evap temperature sensor type are not configured Indoor coil temperature sensor reading is out of range, indicates open or short Indoor coil temperature sensor reading is out of range, indicates open or short EEV electric motor drive or feedback or 12 V failure detected Heater-Air handler mismatch Heater-Air handler mismatch Faulty EEV motor / wiring harness Faulty EEV motor / wiring harness System low on charge, liquid line restriction, ET/GT sensor calibration Condensate line clogged Low / incorrect airflow, low refrigerant charge, ET sensor calibration, normal for low ambient cooling Wire harness between AFC and distribution board Wire harness between EHC and distribution boar Wire harness between HHC and distribution board Wire harness between EVC and distribution board Wire harness between Display Assembly and distribution board PM programming or internal communication error Sensor open / shorted, unplugged, wiring harness problem Sensor open / shorted, unplugged, wiring harness problem EEV motor drive or motor feedback or 12v failure, wiring harness EEV migrated to 'Close' position but superheat is Possible stuck valve, ET/GT not at the desired set point, sensor calibration valve is not responding to a change in position EEV migrated to 'Open' position but superheat is Possible stuck valve, ET/GT not at the desired set point, sensor calibration valve is not responding to a change in position Possible 26 AM8-SF-1J

27 TAM8 ALERT CODE ADDENDUM Alert Code Alert Group Display Assembly Text A/TCONT900 A/TZONE 950 Notification Level AFC Fault Code EVC Fault Code EHC Fault Code HHC Fault Code Code Alert Description Possible Cause Superheat is flooding fault SYSTEM User Display System 4 - Low superheat Indoor electronic expansion valve control OD DATA is not MISS controlling because outdoor status is unknown Indoor heat demand is not available to HH FAULT User Display 12 6 hydronic heat control Hydronic heat control configuration HH CONFIG User Display 12 5 fault Hydronic heat control freeze condition HH FRZ DET User Display 12 2 detected Communication inactive fault Display Assembly stuck key Open coil freeze sensor (hydronic heat only) Shorted coil freeze sensor (hydronic heat only) BLW COMM User Display OD status unknown to EVC Hydronic Heat is not controlling because Indoor heat demand is not received Hydronic heat capacity is unknown to hydronic heat control Hydronic heat coil freeze detected Critical 4 (a) Blower Communication is not detected KEY FAULT User Display HH FRZ OPEN HH FRZ SHORT User Display User Display 12 3 Display Assembly has a stuck key Hydronic coil freeze inlet temperature sensor open condition detected Hydronic coil freeze inlet temperature sensor short condition detected Notes: 1. COMM LED (amber) will flash the number of communicating devices connected. 2. BM LED should be ON Solid when power is applied. 3. STATUS LED will flash once per second in Idle mode. Once a thermostat demand is received, it will flash 1 time/100 requested. 4. UNIT LED (blue) will flash once every four seconds when communications are normal. (a) AFC STATUS LED will be solid ON during this fault. Stuck valve, ET/GT sensor calibration, restricted distributor line that ET is connected to. leaking indoor check valve If Comm LED on OD unit is flashing the correct device count, replace AFC If Unit LED on HHC is flashing once every four seconds, replace HHC Dip switch on HHC not set (replacement control only) Hydronic coil freeze inlet temperature sensor reading is less than 38ºF Faulty wiring harness, VS motor Faulty Display Assembly Sensor open, unplugged, wiring harness ope Sensor short, wiring harness shorted AM8-SF-1J 27

28 Sensor Locations Evaporator Tem perature Sensor (ET) - loca ted on 3/8 Alum inum distribut or tube (orange wires) Gas Tem perature Sensor (GT) - loca ted on copper section of m anifold (black wires) EEV Stepper Motor 28 AM8-SF-1J

29 Stepper Motor Tables For use with Low and High Superheat Troubleshooting Table 1 For use with FIG 1 Table 2 For use with FIG 2 Common Terminal to Terminal Measurement Common Terminal to Terminal Measurement Gray Orange 46 ohms Brown Blue 46 ohms Gray Red 46 ohms Brown Yellow 46 ohms Gray Yellow 46 ohms Red Orange 46 ohms Gray Black 46 ohms Red White 46 ohms AM8-SF-1J 29

30 EEV TEST OPTIONS Electronic Expansion Valve Test Option 1 Access the Unit Test option through Display Assembly under the Control Menu. Electronic Expansion Valve Test Option 2 Note: Close Valve and Open Valve Tests are active in any mode of operation Test Pins: OPEN, CLOSE, TEST (See J4 on EVC Board) Close Valve Test-Touch CLOSE pin to TEST pin. EEV drives closed (5 seconds max) and stays closed for 1.5 minutes (90 seconds). 1) Status LED will be flashing. 2) Gauges should indicate suction pressure dropping. Valve is working. LPCO may trip. Note: : The Close Valve Test will exit after 1.5 minutes (90 seconds) and will not reinitiate (requires a break and make to initialize). To clear faults stored in memory, apply a jumper between Close and Test pins for 10 seconds. Open Valve Test-Touch OPEN pin to TEST pin. EEV drives open (5 sec max) and stays open for 30 seconds. 1. 1) Status LED will be flashing. 2. Temperature probe should indicate superheat falling. Valve is working. Note: : If jumper is left on pins, the OPEN VALVE TEST will be cleared after 30 seconds and will not reinitiate (requires a break and make to reinitialize). Exit Test Mode-The Open Valve Test or Closed Valve Test can be cancelled by momentarily jumping to the opposite mode Test pin. The system will return to normal super heat control. 30 AM8-SF-1J

31 EVC THERMAL RESISTANCE AND VOLTAGE TABLE TEMP F TEMP C THERMISTOR RESISTANCE (OHMS) * Volts DC at plug J3 EVAP TEMP (ET) Orange to Orange GAS TEMP (GT) Black to Black TEMP F TEMP C THERMISTOR RESISTANCE (OHMS) * Volts DC at plug J3 EVAP TEMP (ET) Orange to Orange GAS TEMP (GT) Black to Black TEMP F TEMP C THERMISTOR RESISTANCE (OHMS) * Volts DC at plug J3 EVAP TEMP (ET) Orange to Orange GAS TEMP (GT) Black to Black Values should be within +/- 5% Test Methods R9 L2 +V GND A/Y B/Z J2 1. When measuring DC voltage, use Evap Temp and Gas Temp points to GND (ground) test point. Q1 C4 R40 R5 L3 MOV1 MH3 43 C1 J1 R44 2. When measuring DC voltage, measure from ET Sensor pin to pin and GT Sensor pin to pin at J3 connector. Q2 D5 +12V R59 EVAP TEMP test point 3. When measuring resistance, remove J3 harness and measure ET and GT pin to pin Q3 Q4 R19 D8 R26 R48 C36 GAS TEMP R12 R73 OVR FLOW EVAP TEMP J6 C30 R72 R77 R78 J3 GND MH2 ET Sensor GAS TEMP test point GT Sensor J3 See Table Above Test Pin-Pin AM8-SF-1J 31

32 AFC SUPPLYAIR TEMPERATURE SENSOR TABLE Temp. F Temp. C Thermistor Resistance Ohms Volts plug J10 Temp. F Temp. C Thermistor Resistance Ohms Volts plug J10 Temp. F Temp. C Thermistor Resistance Ohms Volts plug J Airflo w Co ntrol (AFC) J AM8-SF-1J

33 Display Assembly Display Assembly General Notes Home Screen The system Status is shown continuously on the Home Screen The System Status will alternate with fault information if there is an active fault. Low level faults do not appear on the Home Screen. Technician Screens To Enter the technician menu section, press the Up/Down menu keys simultaneously for 10 seconds. To Exit the technician menu section, press the Up/Down menu keys simultaneously for 10 seconds. To move to the top of any menu tree, press the Left/Right menu keys simultaneously for 1-2 seconds. Press the Left/Right menu keys a second time for 1-2 seconds to return to the Home Screen. While in a technician menu, after 5 minutes of inactivity, the Home Screen will be displayed. This time can be increased to 20 minutes by pressing the Enter menu key for 2-3 seconds. Technician Screen Home Screen SYSTEM STATUS XXXXXXXXXXXXXX MONITOR MENU ALERT MENU CONFIG MENU CONTROL MENU To toggle between the Hom e Screen and the Technician Screen m enu, press the Up/Down menu keys sim ultaneously for 10 seconds on the Display Assem bly AM8-SF-1J 33

34 Display Assembly Home Screen scroll EHC(HHC) SW BUILD XXXXXXXXXX EHC (HHC) SW VERSION XXXXXXXXXX CDA SW BUILD XXXXXXXXXX CDA SW VERSION XXXXXXXXXX AFC = Airflow Control EVC = Expansion Valve Control EHC = Electric Heat Control UNIT CONTROLS HHC = Hydronic Heat Control DA = Display Assembly <Cntrl> = Control declaring fault <Alert Short Text> = Short text for Alarm (located in alert code addendum) NOTES: 1. System Status will rotate automatically with active alerts. Only alerts with a notification level of User or Critical are shown (same as the thermostat); up to four (4) alerts will be shown, most recent first. 2. Alerts shown will be only AFC faults for initial release. Specific control alerts are in Alert menu section. SYSTEM STATUS STANDBY FAN ON CLG# ON HP# MESSAGE Idle, no demand is present Continuous fan call Compressor cooling, 1st or 2nd stage Heat pump heating, 1st or 2nd stage SYSTEM STATUS HP# + EH ON HPD# HPD# + EH EH EH EH HH ON HP# + HH ON HPD# + HH MESSAGE Heat pump heating + electric heating Heat pump heating in defrost, 1st or 2nd stage Heat pump heating in defrost + electric heating Electric heat, elements detected but not active Electric heat, elements active Electric heat, element, element faulty Hydronic heating Heatpump heating + hydronic heating Heatpump heating in defrost + hydronic heating When EHC is detected Boxes Represent element configured but not energized element configured and energized element faulty, may or may not be energized 34 AM8-SF-1J

35 Display Assembly Monitor Menu Technician Monitor Menu CONTROL menu ALERT menu The Monitor menu allows the technician to monitor the different aspects of the system while the air handler is running. No changes can be made in the Monitor Menu. Superheat is only shown in cooling and defrost modes Airflow Data The letters ESP (External Static Pressure) will appear when the control mode of the motor is Constant Torque; and the calculated is greater than 50 from the demand. (Allow 90 seconds for the motor ramping process to end to verify that the motor cannot achieve the demand airflow) AUX HEAT DMD is only shown when an electic heat or hydronic heat control has been detected. EH RELAYS is only shown when an electric heat control has been detected. H20 TEMP IN is only shown when a hydronic heat control has been detected. EXT SW ACTION IGNORE COIL TEMP is calculated (CALC) during the cooling and defrost modes. General Notes: When EHC is detected, boxes represent: = element configured but not energized EH RELAYS OR HH RELAY = element configured and energized H2O TEMP IN XXX F H2O TEMP OUT XXX F = element faulty, may or may not be energized COOL RUN TIME XXXXXX HRS HP RUN TIME XXXXXX HRS AUX RUN TIME XXXXXX HRS CYCLE COUNT COOL CYCLES XXXXXX COUNT HP CYCLES XXXXXX COUNT AUX CYCLES XXXXXX COUNT AM8-SF-1J 35

36 Display Assembly Alert Menu MONITOR menu ENU CONFIG menu The Alert menu allows the technician to view active and historical faults that have occurred. Alerts are grouped by the control declaring the fault. AFC EVC EHC or HHC DA The first line of text contains the description of the fault and the component that reported it. The abbreviations for the components are: AF = Air Flow control EV = Expansion Valve control EH = Electric Heat control HH = Hydronic Heat control DA = Display Assembly The second line of text contains any action that may take place because of the fault and the order that the faults occurred. Some faults will shut down all or part of the system. See the System Actions below. AH = Auxiliary Heat is prohibited (electric or hydronic) CH = Compressor Heat is prohibited CC = Compressor Cooling is prohibited CB = Compressor Heat and Cooling is prohibited BI = Blower operation is prohibited* * Applies only to states that are prohibited Timestamp (DDDD:HH:MM:SS) The elapsed time the fault occurred from when the unit was installed. COUNT The number of times the fault has occurred. Note: When the fault history is cleared, the COUNT will also be cleared. 36 AM8-SF-1J

37 Display Assembly Config Menu Note: denotes active value * indicates factory value COOL /TON & HEAT /TON OPTIONS: /TON NOTE: Variable Speed Outdoor units require /TON for both Heating and cooling NOTE: OD TONNAGE is non-selectable when a communicating OD unit is connected on the communic ating bus. RESTORE DFLT? NO (YES) <ENTER> ARE YOU SURE? NO (YES) <ENTER> The Config Menu allows the technician to set blower mode, airflow, supply air temperature control during defrost, and the external switch actions. Checkmark is the active setting Asterisk is the factory default setting Torque mode is optional and is recommended for high static applications. High static conditions dramatically increase energy consumption with variable speed motors. Evaluate the blower performance table in relationship to the duct system to determine the benefit of each installation. HEAT /TON is only shown when a communicating heat pump is discovered and electric heat is present. SAT control is only shown when a communicating heat pump is discovered. OD TONNAGE is only adjustable when a communicating OD unit is not discovered. External Switch Options (See External Switch wiring section) IGNORE* = Ignore When this option is selected, no action is taken. SH-CLG = Load Shed Cooling When this option is selected, compressor cooling is disabled. DS-CLG = Disable Cooling When this option is selected, compressor cooling is disabled. Used for external float switch. DS-ALL = Disable all When this option is selected, all modes of operation are disabled. Note: Wiring to the External Switch inputs must be a normally closed circuit with no power applied. Note: Disable cool (DS-CLG) and disable all (DS-ALL) will generate an error on the thermostat. Supply Air Temperature Defrost Options 70F SP = 70F Set Point When this option is selected, electric heat will be turned on to maintain approximately 70 degree supply air temperature if enough electric heat capacity is available. 90F SP = 90F Set Point When this option is selected, electric heat will be turned on to maintain approximately 90 degree supply air temperature if enough electric heat capacity is available. NO HEAT = No Heat When this option is selected, no auxiliary heat is energized. Thermostat heating demand is ignored. HI HEAT = All Available Heat Energized (standard) When this option is selected, the thermostat takes control of the amount of auxiliary heat that is energized. The Supply Air Temperature sensor is not used in this mode. Note: When hydronic heat is applied, all selections but the NO HEAT will default to HI HEAT, allowing the thermostat to control the auxiliary heat. AM8-SF-1J 37

38 Display Assembly Control Menu EVC TEST: Scroll to desired test and push the <Enter> key. OPEN: When selected, the EEV will drive to the full open position (OPEN 500). CLOSE: When selected, the EEV will drive to the closed position (CLOSE 056). CONTROL : Press Enter key to initiate control. (Unit must be in Standby or Idle mode) First value is current selection, Second value is actual airflow. Use left or right menu keys to decrease or increase airflow in 100 increments. Press ENTER to initiate new demand. Actual airflow is updated every six seconds. Note: To exit CONTROL, cycle power to the unit or turn the thermostat to the off position, fan auto. Time delays may allow fan operation for up to three minutes. UNIT TEST: Press <Enter> key to initiate test. (Unit must be in Standby or Idle mode) Once test is started, the screen updates automatically and navigation is not allowed. UNIT TEST may only be interrupted by a thermostat demand or turning off the power. Note: EVC TESTand/or AUX HEAT TEST will be skipped if the associated control(s) is/are not discovered. 38 AM8-SF-1J

39 Troubleshooting AM8-SF-1J 39