FOR SERVICE TECHNICIAN S USE ONLY

Transcription

1 FOR SERVICE TECHICIA S USE OL OTE: This sheet contains important Technical Service Data B Tech Sheet Do ot Remove Or Destroy DAGER ARIG Electrical Shock Hazard Only authorized technicians should perform diagnostic voltage measurements. After performing voltage measurements, disconnect power before servicing. Failure to follow these instructions can result in death or electrical shock. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. Voltage Measurement Safety Information hen performing live voltage measurements, you must do the following: Verify the controls are in the off position so that the appliance does not start when energized. Allow enough space to perform the voltage measurements without obstructions. Keep other people a safe distance away from the appliance to prevent potential injury. Always use the proper testing equipment. After voltage measurements, always disconnect power before servicing. Electrical Supply: (Under load) 60 Hz, 20 VAC Supply ater Flow Rate: To fill 2 qt (.9 L) in 27 seconds, 20 psi maximum, 20 psi minimum. SPECIFICATIOS Lower Spray Arm Rotation: 2 to 40 rpm Upper Spray Arm Rotation: 2 to 0 rpm Supply ater Temperature: 20 F (49 C) (Before starting a cycle, run water from sink faucet until hot.) REPAIR KITS ater Charge:.58 gal. (6.0 L) Approximate Vinyl Touch-up Kits: (Blue), (hite), (Gray) Pin Control Assembly Control Assembly Pinch to release Rotate Connector Box Control panel snap locks control in place Rast Connector Pinout Fuse Service Check: F9 = Small-triac Load Fuse Check operation of loads during Service Diagnostics Cycle. If any of the triac loads work, F9 Fuse is OK. If all triac loads fail to work, F9 Fuse could be open. See Fuse Resistance Check. Fuse Resistance Check: 2. Measure resistance of fuse F9. Pin Connector Brace (To remove, pinch arms and rotate) Meter Check of Loads and Fuses Buttons on bottom of control housing slide into keyhole slots on control panel to support the control OTE: Fuses are on the bottom of the control board, but can be checked from top side (see Control Pinout diagram). If < ohms, fuse is OK. If > ohms, fuse is open. hat To Do If Fuse Open: Inspect and check resistance of all loads on fuse. If any loads are open, shorted, or have evidence of overheating or pinched wires, replace loads and/ or repair wires.

2 iring Diagram Schematic shown with door switch and all other normally-open contacts open. *Denotes energy-efficient components. Do not substitute. Most used test points on PC board for multimeter checks Line Ferrite ( Loop) Line Dispenser ax Motor Flow Meter Optional (not many models) Softener Salt Sensor (Closed when empty) (not all models) A-Sync ash Motor Pump with Chopper TurboZone ax Motor (not all models) 5 Thermostat (Hi-Limit) BU/R.C. Heater BU/R Element Overfill (Float) Switch Dispenser Solenoid OR 9K 2 4 (Spare) Future 2 4 Drain Motor Softener Regen Valve Fill Valve* (not all models) Door Switch (Spare) Future Vent ax Motor (not all models) Fan Motor (not all models) (Spare) Future (Spare) Future 2 O..I.* (TC, Foam, and Turbidity Sensor) This option no fuse, jumper only BU/ P4-4 BU/R P4- P4-2 P4- LBU P5-2 LBU P5- P6- P6- P6-4 P6-6 P6-7 P6-9 R P8- R P8- R P8-4 R P8-6 Black strip on connector Red strip on connector BU P7- BU P7- BU P7-4 BU P7-6 V P9- V P9- V V P9-5 P9-6 P0- P0- P0-4 P0-5 R P R P2 R P R P4 R P5 R P6 P P2 P P4 P5 P6 P5 P6 P7 P8 P9 P0 P P2 P P4 HTR-L Relay Pilot Relay Fuse F9 Fuse F8 2 K Optional HTR- Relay Sense K Motor Sense Circuit is different for high versus low power motors AC Input Overfill/Leak Detection (and Pilot Relay Detection) Pilot Test Pad for all Triac Loads Analog Input Digital Input Analog TC Input Input Foam Drive Opt Turbo V Sig Drive K4 Motor Relay Load (Current) Sense for Drain, Vent, and all other Triac loads on Pilot Door Open Detection Fan Load (Current) Sense ide Data Return Line -volt relays coils goes through door switch VCC V Power Supply V (+8V) Level Level 4.4 VCC () Level -7.4 REF (-5V) * CCU PC Board 7¹ ₂" x ³ ₁₆" (90.28 mm x 8.0 mm) sided FR4 In factory Programming Port 2 4 (on top surface of PCB) P2 (depopulate in production; use pads) V Beeper Capacitive Touch Keyboards 4-Pin PVCC P4-REF PA PB 2 PC LED Displays 4-Pin Mechanical Push-Button Boards and Active Overlays 20-Pin ide Data VCC REF P PA and PB User Interface Connector Options (ide Out) Temporary connection port for development tools (and future service tools) 2

3 ITERVAL CCLE, OPTIO, AD STATUS LEDs ORMAL HI TEMP HEATED DR HR ASH START/RESUME RUIG SAITIZED CLEA/7-SEG OTE OTES 5 4,5 ALL OTHER CCLE, OPTIO, AD STATUS LEDs ITERVAL TIME (min:sec) TOTAL TIME (MAX.): 2:6 SOIL SESIG ITERVALS AD SESOR CHECKS APF enabled intervals (APF is OI turbidity was >: Bulk in previous interval) OTE 4 OI (soil sensor) check intervals OTE 4 OTE: OI has thermistor built in - see below THERMISTOR (TEMPERATURE SESOR) CHECK ITERVAL OTE 5 SALT LEVEL REED SITCH/ FLOMETER IPUT TEST OTE 6 LOADS PILOT RELA VET (OT ALL MODELS) FILL* ASH MOTOR DISPESER (DETERGET/RISE AID) TURBO ASH AX MOTOR DRAI MOTOR* DC FA MOTOR (IF PRESET) HEATER REGE (IF PRESET) *APF purges are alllowed in APF enabled intervals. APF Purge: 2 drain pulses, 5 sec. FILL and DRAI, then 5 sec. FILL. Service Diagnostics Cycle otes: Service Diagnostics Cycle RM RM RM RM RMRM HIT HIT HIT HIT RM RM HIT HIT RM RM RM HIT HIT HIT RM RM HIT HIT RM HIT DR DR DR DR DR DR DR DR DR DR DR DR DR HR HR HR HR HR HR HR HR HR HR HR STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA STA RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU RU SA (SA) (SA) CL 7-SEG 7-SEG 7-SEG 7-SEG (CL) (CL) (CL) (CL) (CL) 7-SEG ALL 0:06 0:0 CUSTOMER ERROR CUSTOMER ERROR 2 CUSTOMER ERROR CUSTOMER ERROR 4 2 OTES To invoke the Diagnostics Cycle, perform the following while in standby: Press Start to wake up the control panel. Press any keys in the sequence -- with no more than second between key presses. The Service Diagnostics Cycle will start when the door is closed. To rapid advance interval at a time, press the Rapid advancing may skip sensor checks as some checks require 2 complete intervals. OTE: hile in the Diagnostic Cycle, the feature is turned off (for example, Auto Resume after door interrupts) and the key becomes an interval advance Invoking Service Diagnostics clears all status and last run information from memory and restores defaults. Drain and wash motors will pulsate on and off Last run cycles and options returned to default. Reset OI calibration values to the default values. Forces OI (Optical ater Indicator) calibration cycle on next customer cycle. OTE: Calibration cycle may add additional rinses prior to the final rinse to assure clear water and then calibrates the OI during the fill at the beginning of the final rinse. Operating state returns to standby upon completing or terminating the service diagnostics cycle. Reference Service Diagnostics with s section for details. 0:0 0:5 0: 0:0 OI THR :00 2:00 (APF) 0:5 2:00 0:5 OI :00 :00 0:5 0:5 OI PLT PLT PLT PLT PLT PLT PLT PLT PLT PLT PLT PLT PLT PLT VT VT VT VT VT VT VT VT VT VT VT VT VT VT FIL FIL FIL (APF) SH SH SH SH SH SH SHSH DSP TZ TZ (APF) DR DR DR HTR REG :0 2:00 SRM FA HTR 6 SERVICE ERROR SERVICE ERROR 2 2 Turn on all LEDs immediately upon receiving the entry sequence (even if the door is open) for 5 seconds as a display test. Turn off all LEDs for second prior to reporting customer error history. Press Hi Temp key in this interval to clear customer error history. If the Hi Temp key does not respond, the control panel is in sleep mode. Open and close the door to wake up the control panel and then press Hi Temp key to clear error history. 4 OI (Optical Soil Sensor) checks - Check OI sensor for the presence of water during the interval 4 and turn on the Clean LED in interval if water detected. Check OI for the presence of air during drain interval 5 and turn on the clean LED in interval 4 if air detected. Check OI sense for the presence of bulk soil during pause interval 9; execute APF and turn on clean LED in interval 8 if bulk soil detected. 5 Thermistor (temperature sensor) checks - turn clean LED on if thermistor is in its normal temperature range (2 F to 67 F [0 C to 75 C]). Turn sanitized LED on if fill temperature is above 65 F (8. C). 6 Turn on Sanitized LED in this interval to indicate that the Salt Level Reed Switch is closed. 7 Turn on Clean LED in this interval to indicate that vent current is detected. S T A D B To quickly advance through customer cycles, invoke the Rapid Advance mode by pressing HIGH TEMP - HEATED DR - HIGH TEMP - HEATED DR, after starting the cycle. Then, press START/RESUME to advance through cycle intervals. Customer Cycle Operation OTE: Rapid Advance mode is automatically enabled in the Service Diagnostic cycle, but must be manually invoked in customer cycles.

4 Control Pinout Meter Check of Loads And Fuses Load must be connected for triac to operate correctly. Meter checks best made at the Ω of F9 Triac Fuse (Top) 2 P5 P6 P7 P8 P9 P0 P P2 P (OI) P2 (ide Out) P P4 P5 P6 P7 BU P8 R P9 V P0 P R P2 The following individual circuits are for use in diagnoses. Do not continue with the diagnosis of the appliance if a fuse is blown, a circuit breaker is tripped, or if there is less than a 20-volt power supply at the wall outlet. Dishwasher Strip Circuits Perform resistance checks. To check resistance of a component, disconnect harness leads first. Door Switch (To Heater) (To ash Motor, Vent, and Triac Loads) (To Heater) (To ash Motor) Door Switch K K K4 Sensing Heater () Relay Pilot () Relay Heater () Relay Motor () Relay Input V V V P9-6 P9-5 Door Switch P0-4 Ref ash/rinse Motor Power P4-2 P5-2 Pilot Relay (Also see Door Switch Circuit) TURQ (LBU) Run inding Ω - 7Ω V Pin AUX inding 6Ω - 0Ω Motor and Capacitor (ash Pump) 20V, 60 Hz, 20 typical 250 Max. Sense Resistor TURQ or Jumper (LBU) 0Ω P5- P4- Pin K4 Motor Relay CAP 2.5 µf (Also see Door Switch Circuit) ater Heating/Heat Dry and ater Sensing with O..I. Sensor (ater/air/soil/temperature) Pump is washing and control monitors temperature during water heating periods (see ash/rinse and ater Heating/Heat Dry and ater Sensing with O..I. Sensor [ater/air/soil/temperature] circuits). Heater.C. P4-2 P4- BU/R BU/R BU/ P4-4 P4- K Hi-Limit Heater Element K Heater Relay Thermostat 8Ω - 0Ω Heater Relay (Also see Door Opens 20V, 60 Hz (Also see Door Switch Circuit) 207 F - 27 F 785 et Switch Circuit) (97 C - 0 C) 500 Dry Electronic Control P6 P5 P4 P P2 P Pin Pin 2 Pin Pin 4 Pin 5 Pin 6 Turbidity Drive O..I. Sensor Foam Drive OPT Sig VCC Temperature: TC Thermistor Ref 46KΩ - 52KΩ at 77 F (25 C) TC KΩ - KΩ at 40 F (60 C) Measure TC resistance at P and P connector disconnected from 4

5 Fill Float Use top hole of jumper (In normal position, Float Switch 2 as test point for F9. holds switch closed.) Input P4-2 P6-4 P6-6 P6-7 P6-9 P4- Pin Pin Pin Pin Pilot Relay Fuse P0- Fill Valve Triac (Also see Door F9 890Ω -,090Ω Switch Circuit) Overfill 20V, 60 Hz, 6 Float Switch o test pad on P6-4. o test pad on P6-7. Recommend using test pad on P0-. Recommend using test pad on P6-6. Drain Use top hole of jumper 2 as test point for F9. P4-2 P6- P6- P4- Pin Pin Pilot Relay (Also see Door Fuse Triac P0- Switch Circuit) F9 Drain Motor 5Ω - 25Ω 20V, 60 Hz, 00 o test pad on P6-. Recommend using test pad on P0-. Dispenser (Detergent and Rinse Aid) Use top hole of jumper 2 as test point for F9. Pin Pin 5 V V P4-2 P9- P9- Pin Pin Pilot Relay (also see Door Switch Circuit) Fuse F9 Test pad on P9- might crowd P9-. Recommend using test pad on P0-. P0- Dispenser ax Motor.4KΩ - 2.8KΩ 20V, 60 Hz, 0 P4- Dispenser Solenoid 280Ω - 40Ω Triac 20V, 60 Hz, ater Softener Regeneration Valve Use top hole of jumper 2 as test point for F9. P4-2 P7- Pilot Relay (Also see Door Fuse P0- Switch Circuit) F9 o test pad on P7-. Recommend using test pad on P0-. BU BU Pin Pin Regeneration Valve 890Ω -,090Ω 20V, 60 Hz, 6 P7- P4- Triac Salt Level Sensing 5V (Closed when salt low) Salt Level Reed Switch P2 R R Pin Pin 2 9 KΩ P Pin 4 Pin Pin (R) (R) Pin (Optional Flowmeter) Sensor Input Turbozone (not on all models) P4-2 Use top hole of jumper 2 as test point for F9 Pilot Relay (Also see door switch circuit) Fuse F9 P7-4 BU BU P7-6 P4- Pin Pin TurboZone ax Motor Triac 600Ω to,800ω 20V, 60 Hz, 6 5

6 Drying For Heated Dry, heater is also running. See Heater circuit under ash/rinse and ater Heating/Heat Dry and ater Sensing with O..I. Sensor (ater/air/ Soil/Temperature) circuits. Vent (not on all models) Fan (not on all models) Use top hole of jumper 2 as test point for F9. (Red stripe (Red stripe on plug) on plug) P4-2 P0- P0- P4- Pilot Relay (Also see Door Switch Circuit) Fuse F9 Pin 5 Pin Vent ax Motor 600Ω -,800Ω 20V, 60 Hz, 6 (Red stripe on plug) (Red stripe on plug) _ + P0-5 P0-4 Pin Pin 5V DC Ref Fan Motor KΩ - 4KΩ 5 VDC, Must measure resistance with correct polarity and disconnected from controls. P5 o test pad on P0-4. Recommend using test pad on P5. Entry sequence: Press Start key to wake up the control panel. Press any keys in the sequence -- with no more than second between key presses. OTE: Some models have replaced the Clean LED with Completed. DISPLA TEST - ALL LEDs O ITERVAL 24 FUCTIO code. (F#) If no error, 7-SEG will display (F-) FUCTIO code. (F#) If no error, 7-SEG will display (F-) FUCTIO code. (F#) If no error, 7-SEG will display (F-) ERROR - MOST RECET ITERVAL sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) Service Diagnostics with s sec. Repeat times unless advanced by ERROR 2 ITERVAL sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) sec. Repeat times unless advanced by ERROR ITERVAL sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) sec. Repeat times unless advanced by FUCTIO code. (F#) If no error, 7-SEG will display (F-) ERROR 4 - OLDEST ITERVAL sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) 0 second pause Hi Temp LED will be on Press Hi Temp key to clear errors. Hi Temp LED will blink twice to indicate errors have been cleared. If the Hi Temp key does not respond, open and close the door to wake up the control panel. Press Hi Temp key to clear errors. Service Diagnostics Cycle Turns on loads and checks sensors. FUCTIO code. (F#) If no error, 7-SEG will display (F-) FUCTIO code. (F#) If no error, 7-SEG will display (F-) sec. Repeat times unless advanced by ITERVAL 9 ITERVALS 8- SERVICE CCLE ERROR ITERVAL sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) sec. Repeat times unless advanced by SERVICE CCLE ERROR 2 ITERVAL 0.5 sec. PROBLEM code.(e#) If no error, 7-SEG will display (E-) sec. Repeat times unless advanced by OTE: Once error codes are extracted refer to Service s Table to diagnose and correctly resolve root cause condition. 6

7 FOR SERVICE TECHICIA S USE OL Service s Table Example: 6- means Inlet ater function, Low/o ater Function Control Pilot Stuck On User Interface Control Software Issue Stuck Key Control detected pilot relay stuck closed. All LEDs are on. Control detected stuck key(s) in keypad or keypad connection. OTE: If any keys are stuck, the stuck key(s) will be ignored and an error recorded to the service history, but no alert to customer. 2. Check all loads on pilot relay for shorts.. Replace control and all shorted components. 2. Replace UI. (for models with neumeric display only.) Check responsiveness of each. If some keys do not respond, then: - - Disassemble door and disconnect keypad connection from control or LCD display module. - Verify all other connections to control are made. - Reassemble door but do not close door (leave keypad disconnected). - Plug in dishwasher or reconnect power. - ait at least 7 seconds for control to power up completely. - Close dishwasher door and monitor control response: A. If control is OK (no longer sees stuck keys with keypad unplugged), it will respond by turning on the drain motor for 2 minutes. Replace keypad and console. B. If control is not OK (still sees stuck keys with keypad unplugged), it will not turn on drain motor. ait for at least 0 seconds. If still no drain response, then replace control or LCD display module (whichever one the keypad was connected to). 2. If all keys appear OK or intermittent, and keypad is capacitive touch type, then: - Verify tub brackets are screwed to underside of countertop and not hanging over keys (if screw head too close, relocate screw to alternate hole). - Check for evidence of moisture or debris on the surface of the keys. If evident, clean and instruct customer about keeping surface clean. - Check error code history for Fan 0- as potential cause of condensation on user interface. - Verify presence of vent current if model has a vent wax motor. Refer to Leaks or Drips on Cabinet or Floor in the Troubleshooting Guide section. Function User Interface - Thermistor /OI 4- ash Motor o response from UI Open Shorted - Failed Calibration - Motor ot Running User interface cannot communicate with main Loose user interface connection. Open connector or component in Temperature Sensing circuit. -Open or faulty temperature sensor. -Temperature sensor input on Incoming water temperature above 67 F (75 C). -Shorted connection or component in Temperature Sensing circuit. -Shorted or faulty temperature sensor. -Temperature sensor input on 2.Check the connection between the UI and the control PC connector. If the connection(s) is loose or if wires are loose or damaged; reconnect, repair or replace as needed.. Check for 5VDC from PC-2 to PC-4. If there is no voltage at control; disconnect power, replace main If there is voltage at control; then replace console.. Check operation of temperature sensor in Service Diagnostics cycle. 2.. Check all components and connections in the Temperature Sensing circuit with meter. Fix/replace open connection/part.. Check incoming water temperature. 2. Check operation of temperature sensor in Service Diagnostics cycle.. 4. Check all components and connections in the Temperature Sensing circuit with meter. Fix/replace open connection/part. See OI sensor strip circuit.. OI failure.. Run Service Diagnostics to check OI operation. OI should see low soil with clear water. 2. Check OI lens surface. Clean if needed.. 4. Check all connections in Soil Sensing Circuit with meter. Fix/replace bad connection/part. OTE: Run Diagnostics after replacing new OI to force calibration on next wash cycle. 2. Drain hose check valve not sealing. Dirty water backs into dishwasher after draining.. Disconnect drain hose at plumbing connection. 2. Elevate hose above dishwasher and fill with water. If water flows into dishwasher, replace entire drain loop. Install as high as possible and attach to underside of countertop if possible.. Loose. Check operation of wash connection in motor during diagnostics. Motor circuit and/ 2. or faulty wash motor.. Check resistances of connections in the ash circuit. - If high resistance, check/fix loose connections or replace wash motor. 7

8 Function 4- ash Motor 5- Door Switch 6- Inlet ater - Motor ot Running Door Stuck Open Door Stuck Closed Low/o ater (Mechanical Problem) 2. Control Motor Drive circuit or Sense circuit.. Door was not latched within 4 seconds of pressing the 2. Loose connection in Door Switch circuit and/or door switch contacts stuck open and/or door switch contacts stuck open and/ or door switch not making contact: -Sloppy door latch assembly, which can be aggravated by high door closure force, keeping strike plate from fully seating. -Door switch (high resistance).. If none of the above. Control programmed to not start if it suspects the door switch is stuck closed. Control looks for the door switch to open between cycles. -Customer didn t open the door between cycles or door switch contacts stuck closed.. o water to dishwasher. 2. Bowls or pots loaded or flipped and captured wash water. 2. If meter check of ash Motor circuit shows normal resistance and still not getting power to the wash motor, replace Instruct customer. Refer to Use and Care Guide.. Check strike plate and door closure force. Verify door seal is seated properly. Check for interference between dish racks and door. Try bending strike plate down for better engagement. 2.. Check resistances of door switch contacts and all connections in the Door Switch circuit with meter while opening and closing the door latch. - If high resistance with door closed, check/fix loose connections. 4. Measure resistance of door switch contacts while checking mechanical operation of latch assembly. Check for broken plastic pieces on latch assembly. Replace latch if faulty. 2. Check for VDC from P9-5 to P9-6 by completing the following steps: A. Connect voltage measurement equipment. B. Plug in dishwasher or reconnect power and verify VDC. C. If no voltage is present, unplug dishwasher or disconnect power and replace. Open and close door and then press If it works now, instruct customer to open door between cycles. 2.. Measure resistance of door switch contacts while checking mechanical operation of latch assembly. Verify water supply is turned on and supply line adequate. Instruct customer on loading. Refer to Use and Care Guide. Function 6- Inlet ater Low/o ater (Mechanical Problem) Fill Valve Electrical Problem - Suds/Air in Pump 4- Float Switch Open. Drain loop detached from tub and/or improper drain connection. 4. ater leaking from dishwasher. 5. Fill valve or water line plugged with debris. 6. Overfill switch stuck in Overfill position and/or dishwasher not level. 7. Fill valve electrical. Loose connection in Fill Valve circuit and/ or open Fill Valve Solenoid. 2. Open fuse on control to fill valve.. Fill Valve Drive circuit on the. Too many suds. 2. Bowls or pots loaded or flipped and captured wash water.. ater leaking from dishwasher.. Overfill switch stuck in Overfill position and/or dishwasher not level. 2. Drain hose check valve not sealing. Check for water siphoning out of unit:. Allow dishwasher to complete normal fill. 2. Drain for 5-0 seconds by pressing CACEL/DRAI.. Open door and confirm water does not siphon out of unit. If it does, confirm drain loop is attached to side of dishwasher and drain hose is connected to a drain at least 20" (50.8 cm) off the floor. Check for leaks under dishwasher. Turn off water supply to dishwasher, disconnect water line to inlet valve, and inspect/ clean the inlet screen of fill valve, and reconnect water. Check other error codes to see if 6-4 also occurred. See 6-4. Check other error codes to see if 6-2 also occurred. See 6-2. resistances of fill valve solenoid and all connections in the Fill circuit with meter. -Fix/replace open connection/ part. Refer to Fuse Service Check in Meter Check of Loads and Fuses section. replace. Allow unit to fill and wash for minute. Open door and check for excessive sudsing. 2. Confirm using proper dishwasher detergent, not hand detergent.. Check for excessive rinse aid leakage. Instruct customer on loading. Refer to Use and Care Guide. Check for leaks under dishwasher. Remove any items stuck under the float. Verify that the float moves freely and you hear the click of the switch contacts. Check/adjust levelness of the dishwasher. ater backs into dishwasher after draining and elevates water level.. Disconnect drain hose at plumbing connection. 2. Elevate hose above dishwasher and fill with water. If water flows into dishwasher, replace entire drain loop. Install as high as possible and attach to underside of countertop if possible. 8

9 Function 6- Inlet ater 4- Float Switch Open 6- Cool ater 7- Flowmeter 8- ater Softener Regen Valve Electrical Problem (ater Softener Models Only). Fill valve triac on control shorted. 4. Fill valve mechanically stuck open. 5. Too many suds. 6. Open fuse F9 to fill valve and other triac loads. Incoming water under 84 F (29 C). Disconnected or damaged flowmeter.. Loose connection in Regen valve circuit, and/or open Regen valve solenoid. If still filling while door is open, fill valve is mechanically stuck open (see below). If not filling with the door open, check operation in Service Diagnostics Test Cycle. Advance Service Cycle until detergent dispenser opens. Fill valve should be off. Listen to see if dishwasher is still filling. If still filling, unplug dishwasher or disconnect power and replace Confirm dishwasher fills while the door is open. If yes, unplug dishwasher or disconnect power, turn off water to dishwasher, replace fill valve, and turn water back on.. Allow unit to fill and wash for minute. Open door and check for excessive sudsing. 2. Instruct customer if using improper dishwasher detergent (hand detergent).. Disconnect power and replace dispenser if see excessive rinse aid leakage. Refer to Fuse Service Check in Meter Check of Loads and Fuses section.. Be sure dishwasher is connected to the hot water supply. 2. Confirm temperature at sink (recommend 20 F [49 C]). Instruct customer to run water at sink before running dishwasher.. all connections and measure resistance in Temperature Sensing circuit. Replace OI if resistance is high.. Disconnect power or unplug unit. 2. Check connections at salt level sensor and at flowmeter.. Use meter to check for flowmeter switch closed. Use meter to check salt level sensor. Switch is open when salt reservoir is filled and closed when salt reservoir is low/empty. 4. Disconnect flowmeter and leave salt sensor connected. Apply a magnet to side of the salt tank near the sensor connection to force the switch closed. 5. ith the magnet in place, run the complete service diagnostics cycle. If the sanitized LED turns on in interval, the control is good; replace the flowmeter assembly. If the sanitized LED does not turn on, the control input has failed; replace the resistances of Regeneration valve solenoid and all connections in the Valve Circuit. Fix/replace open connection/part. Function 6- Inlet ater 7- Heating 8- Draining 8- ater Softener Regen Valve Electrical Problem (ater Softener Models Only) o Heat Heater Stuck On Slow Drain Drain Motor Electrical Problem - Drain Stuck On 2. Open fuse on control to Regen valve.. Regen valve drive circuit on the. Control programmed to disable heater, but continue running cycles, if it detects a water heating 2. Heater circuit problem: - Open in heater. - Open connection or component in Heater circuit.. Heater Drive circuit on the Heater Drive circuit on the. Obstructed drain hose or path. 2. Drain Pump impeller fractured.. Loose connection in Drain Motor circuit and/or open Drain Motor winding. 2.Debris stuck in drain motor impeller.. Open fuse on control to Drain Motor. 4. Drain Motor Drive Circuit on the Drain Motor Drive circuit on the Refer to Fuse Service Check in Meter Check of Loads and Fuses section. replace Running diagnostics clears the control and allows the heater to turn on again. ater heating problem must be corrected, or the control will disable the heater again. See Heater circuit problem below. 2. Measure resistance of heater and all components and connections in ater Heating circuit/heat Dry circuit. Fix/replace open connection/part. replace replace 2. Inspect heater and connections for overheating/ shorting. If evidence of overheating or shorts exists, replace. 2. Check for blockages from Sump Check Valve to customer s plumbing. Potential items: plugged garbage disposal or plug not knocked out, drain loop Check Valve stuck and/or plugged hoses. 2. Remove Drain Pump and check impeller (normally there is some uneven resistance). If it is stripped, replace Drain Pump. resistances of drain motor winding and all connections in the drain motor circuit. Fix/ replace open connection/part. 2.Remove drain motor and dislodge debris from impeller. Refer to Fuse Service Check in Meter Check of Loads and Fuses section. Unplug diswasher or replace replace 2. Inspect Drain Motor and connections for overheating/ shorting. If evidence of overheating/shorting exists, replace. 9

10 Function 0- Other Dispenser Electrical Problem - Drying Fan. Loose connection in Dispenser circuit and/or open dispenser solenoid. 2. Open fuse on control to dispenser.. Dispenser Drive circuit on the. Loose connection in fan circuit, and/or open fan motor. 2. Fan drive circuit on the Troubleshooting Guide resistances of dispenser solenoid and all connections in the Dispenser circuit. Fix/ replace open connection/part. Refer to Fuse Service Check in Meter Check of Loads and Fuses. replace resistances of fan motor and all connections in the fan circuit. Fix/replace open connections or fan. replace OTES: For resistance checks, refer to Dishwasher Strip Circuits section. For checking operation with diagnostics, refer to Service Diagnostics Cycle section. Customer Description Clean LED Flashes on t Run or Power Up ( Dead Keypad/ Console) - o operation - o keypad response - o LEDs or display Potential Causes Check Related (s) Control programmed with self diagnostics.. o power to unit or bad connection. 2. Loose connections in dishwasher power-up circuit or between keypad(s) and. Model has an LCD display and the control has been exchanged for one that is not compatible with the LCD display module. 4. Control detected door switch 5. User interface or Read function code being displayed to customer and refer to function codes portion of error code table. Run service diagnostics test cycle to read full history of error codes. Check fuses, circuit breakers, and junction box connections. 2. Check continuity of power connections to control and connections between keypad(s) and Verify correct control is installed. Control should have no 4-pin user interface connector present at PB if it is configured for an LCD model. replace 2. Refer to Service s Disassemble door and inspect control power connector (P4) and adjacent PC board for damage, Replace as needed. 2. Refer to Service s Table for stuck key (). Run the diagnostic check, item (). If drain motor turns on, control is OK. Replace the UI. If drain motor does not turn on, replace. Inspect UI cable for loose or damaged wiring. Replace as needed. 4. Inspect UI assembly for damage or contamination. Replace UI as needed. 5- Customer Description on t Run and. By design, if the door is Instruct customer. Refer to LED for Start/ opened or power is Use and Care Guide. Resume Key is interrupted during a cycle, Blinking the user must press the Slowly key to resume operation. on t Run and All LEDs On 2. key not responding.. Control detected door switch. Software or hardware incompatibility problem with on t Start Control looks for door to and Start/ open between cycles. Resume key -Customer has not LED Flashes opened door since last Times hen cycle. -Door switch contacts Key is Pressed stuck closed. on t Accept Key Presses and Control Lock LED On One or More Keys on t Respond or Unusual LED/ Display/Key Behavior Control Lockout feature accidentally turned on by customer.. Stuck key or short circuit(s) in keypad or in control s input lines that read the keys. 2. Capacitive touch keypad adhesive coming loose from console.. Loose connections between keypad and control and/or bent or contaminated connector pins. 4. Excessive condensation on user interface parts due to vent and/or fan See One or More Keys on t Respond. Instruct customer. Refer to Use and Care Guide (press and hold Control Lock key 5 seconds to turn On/Off). 2. Inspect keypad board for separation from console. Replace keypad and console if separation is seen. 2. Inspect connections in user interface circuits. Reconnect loose connections. Replace part(s) if pins are damaged or contaminated. Check error history for 0- fan error. Refer to Service s Verify presence of vent current if model has a vent wax motor. Refer to Leaks or Drips on Cabinet or Floor in the Troubleshooting Guide section. 5. For models with a To wake up the control panel, capacitive touch keypad press the Start or Cancel/ on the front of unit, Drain key, or open and close control panel is in sleep the door. mode where all keys. Press and verify all keys (except Start and Cancel/ respond. Instruct customer Drain) are disabled after regarding sleep mode. 0 seconds of inactivity. 2. If keys still do not respond, replace keypad and console. 6. Defective user interface. Dishwasher. User opened door Beeps during cycle and closed Constantly (for door without pressing Models with to resume Beepers) cycle. Long Cycles and/or Stuck in Certain Part of Cycle Potential Causes Check Related (s) 2. ormal beeper operation is excessive to customer. As part of normal operation, the dishwasher pauses 2 or times during the cycle for thermal holds and advances once temperature is met. 2. Replace user interface console assembly. Instruct customer. Dishwasher control is designed to beep if dishwasher is in Cycle Interrupt mode with door latched. Control will stop beeping when door is opened and/or key is pressed to resume cycle. Instruct customer how to turn beeper off and on. Press and hold Hi Temp key for seconds (tone sounds). Instruct customer. Explain thermal holds and how the cycle pauses when they occur

11 Customer Description Long Cycles 2. OI soil sensor picking. Run Service Diagnostics and/or Stuck high soil cycle too often. cycle to check if OI is in Certain Part showing high soil with clear of Cycle water. 2. Check lens surface. Clean if needed.. 4. Replace OI and run Diagnostics after installing new OI to force calibration on next wash cycle.. A water heating problem could cause long cycles but will typically cause a water heating fault. 4. Heater takes a long time to heat water with low voltage. 5. Incoming water too cold. 6. Suds or air in pump requires repeated wash periods. 7. OI or TC sensor LEDs or. Unit is in Sales Demo Displays Run mode. For Short Time (but o Loads Running) and then Shuts Off Can Start a Cycle, but Only Runs for a Short Time - Cycle Does ot Complete (Clean LED or Completed May Blink) ill ot Drain, or Excess ater Left in Dishwasher. OTE: Check History. If o s for Electrical Problems, Problem is Mechanical. Do ot Replace Control. Detergent ot Dispensing or Detergent Left In Dispenser OTE: Check error history. If no error codes for electrical problems, problem is mechanical. Do not replace Potential Causes Check Related (s) 2. Open F9 (Triac load fuse) on control disabled loads. Check for at least 00 VAC at power source. Check operation of Cancel If there is no Cancel LED response to multiple Cancel key presses, the control is likely in Sales Demo Mode. Run Service Diagnostics Cycle to clear Demo mode. Refer to Fuse Service and Resistance Checks in Meter Check of Loads and Fuses section.. Control canceled cycle due to error detected with wash motor, float switch, low water, or suds. 2. Unit in Sales Demo mode.. Drain loop check valve not sealing. 2. Customer misunderstands water level after drain. Run Service Diagnostics cycle to clear Demo mode.. Disconnect drain hose at plumbing connection. 2. Elevate hose above dishwasher and fill with water. If water flows into dishwasher, replace entire drain loop (install as high as possible). Instruct customer. Sump will normally have about " (2.4 cm) of water remaining after cycle.. Draining. Item in lower rack blocked lid or blocked spray of water to dispenser. 2. Mechanical binding of dispenser lid.. Lid latch binding due to excess detergent in mechanism. 4. Dispenser electrical 5. Control canceled cycle before dispensing due to error detected with wash motor, float switch, low water or suds. Instruct customer on proper dish loading. 2. Check/replace dispenser. Instruct customer on proper dispenser filling , 6-6-2, 6-6-4, , 6-6-2, 6-6-4, 8- Customer Description Poor ash Film or Spots On Glasses and/or Dishes Poor Dry Potential Causes Check Related (s). Cycle selection of Instruct customer on cycle customer not appropriate selection. Recommend High for dish load. Temp option for wash performance boost. 2. Spray arms not rotating or plugged.. Poor wash due to draining and/or dispensing.. Check arm rotation. If arms are blocked by dish item, instruct customer. Also check for correct upper spray arm alignment with docking station located on feed tube back wall. 2. Check nozzles. If they are plugged, clean nozzles and confirm filters installed properly. See ill ot Drain or Excess ater Left in Unit or Detergent ot Dispensing or Detergent Left in Dispenser. 4. Control canceled cycle due to error detected with wash motor, float switch, low water or suds. 5. Soil sensor OTE: Even if no error code recorded, confirm OI passes all OI checks in Service Diagnostics cycle and see checks for Heating 7. Softener problem (on some models).. Customer not using rinse aid or dispenser empty. 2. RInse aid dispenser. Hard water leaving film on dishes. 4. Detergent carryover or oversudsing. 5. Etching of glass from too much detergent at too high of temperature. 6. Drain loop check valve not sealing. Check rinse aid gauge level on dispenser. Instruct customer how to fill and monitor add or use rinse aid. Check water hardness. If hard, instruct customer to use maximum detergent or try pouring ¹ ₄ cup (60 ml) of Glass Magic into bottom of dishwasher. Also recommend the HR ash cycle. For models with water softener: Check for Add Salt LED at the end of cycle. If on, add salt and Instruct customer. For models with water softener: Regen valve electrical Refer to Service s Check water hardness. If below 0 grains, then instruct customer to use less detergent and recommend the HR ash cycle. Check water hardness. If below 0 grains, instruct customer to use less detergent and recommend the HR ash cycle.. Disconnect drain hose at plumbing connection. 2. Elevate hose above dishwasher and fill with water. If water flows into dishwasher, replace entire drain loop (install as high as possible and attach to underside of countertop if possible).. Customer not using Check rinse aid gauge level on rinse aid and/or dispenser dispenser. Instruct customer empty. how to fill and monitor, add or use rinse aid. 2. Customer not using Heated Dry option.. Rinse aid dispenser Recommend use of Heated Dry or Smart Dry to customer. 4-, 6-6-2, 6-6-4,

12 Customer Description Poor Dry Sanitized LED Blinks or Incomplete Sanitization Message at End of Cycle (Control Could ot Confirm Sanitization Achieved) Melted Dishware and/ or Spray Arm and/or Dishwasher Always Hot oisy Operation Potential Causes Check Related (s) 4. Vent stuck closed due to pilot relay stuck on (not all models). 5. Fan problem (on models with fan). 6. Control canceled cycle due to error detected with wash motor, float switch, low water or suds. 7. Heating. Door opened during final rinse or dry. 2. Incoming water too cold..heating 4.Thermistor/OI sensor 5. Intermittent door switch/latch connection. 6. Line voltage too low to heat fast enough. 7. Air pressure surges in dishwasher due to washing with high suds causes brief opening of door switch contacts during final rinse. Instruct customer. See same checks as for 5-. Refer to Service s Check power source. Confirm at least 00 VAC.. Customer uses nondishwasher safe dishes or Instruct customer. loads plastic dishes directly over heater. 2. Temperature sensing. ater heating Heater stuck on. 4. ater heater displaced Inspect heater. Adjust back from mounting clip and/or into position if needed. pulled off center.. Spray arm stalled or blocked and spraying on the door. - Instruct customer if blocked. - Check spray arm rotation and inspect for plugged nozzles. If plugged, clean nozzles and confirm filters are installed properly. 2. o or low water.. Drains too long.. Long drain due to OI sensor Refer to Service s Table for Slow drain Refer to Service s Table for Loose connection in vent circuit and/or open vent wax motor. 5. Open fuse on control to vent. 6. Vent drive circuit on the resistances of vent wax motor and all connections in the vent circuit. Fix/replace open connection/part. Refer to Fuse Service Check in Meter Check of Loads and Fuses section. replace 7. Fan runs (makes noise) Dishwasher is designed to after cycle completed (on keep fan running after cycle to models with fan). avoid moisture buildup in dishwasher. Fan will turn off if door is opened longer than 5 seconds. Instruct customer. 0-4-, 6-6-2, 6-6-4, , , Customer Description oisy Operation Leaks or Drips on Cabinet or Floor Potential Causes Check Related (s) 8. Excessive fan noise due to faulty fan (on models with fan).. Loose connection in vent circuit and/or open vent wax motor. 2. Open fuse on control to vent.. Vent drive circuit on the 4. Fan problem (on models with fan).. Check fan operation during Service Diagnostics test cycle. 2.. Replace fan if fan does not spin freely. resistances of vent wax motor and all connections in the vent circuit. Fix/replace open connection/part. Refer to Fuse Service Check in Meter Check of Loads and Fuses section. replace 5. Too many suds. 6. Leaking dishwasher. Check door/tub gasket and all water connections under dishwasher. Refer to Service s 7. Unit not level (leaning forward) and water surges over front lip during cycle. 8. Air pressure surge when door is opened and immediately closed while dishwasher is hot can force droplets out of the vent duct. Check error history for Float is likely to occur if unit is significantly out of level and leaning forward. Refer to. Service s Instruct customer to leave door open a few minutes before re-closing, if opened while dishwasher is hot B 204. All rights reserved. 2 5/4