FOR SERVICE TECHNICIAN S USE ONLY

Transcription

1 FOR SERVICE TECHICIA S USE OLY OTE: This sheet contains important Technical Service Data. W075880C Tech Sheet Do ot Remove Or Destroy DAGER WARIG 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 When 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. SPECIFICATIOS Electrical Supply: Lower Spray Arm Rotation: (Under load) 60 Hz, 20 VAC 2 to 40 rpm Supply Water Flow Rate: Upper Spray Arm Rotation: To fill 2 qt (.9 L) in 27 seconds, 20 psi maximum, 20 psi minimum. 2 to 0 rpm Supply Water Temperature: 20 F (49 C) (Before starting a cycle, run water from sink faucet until hot.) REPAIR KITS Water Charge: Vinyl Touch-up Kits:.0 gal. (.9 L) Approximate (Blue), (White), (Gray) Pin Control Assembly Control Assembly Pinch to release Rotate Connector Box Control panel snap locks control in place Rast Connector Pinout 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 Fuse Service Check: F9 = Small-triac Load Fuse. Check operation of loads during the 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:. Unplug the dishwasher or 2. Measure resistance of F9 Fuse. OTE: Fuses are on the bottom of the Control Board but can be checked from the top side. See Control Pinout diagram. If resistance is < Ω, then fuse is OK. If resistance is > Ω, then fuse is open. What 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 them.

2 Wiring 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 Wire Wire Ferrite (I Loop) Line P4-4 BU- Light In tub (On some models) Dispenser Wax Motor Optional ot Many Models Flow Meter (ot all models) Spray Arm Motor (ot all models) Light Light Light Diverter Motor 9K Heater Element A-SYCH Wash Motor Pump W/RIF Fan Softener salt sensor (Closed when empty. ot all models) BU- Overfill (float) Switch 2 4 Thermostat (Hi-Limit).C. 2 4 Future Dispenser Solenoid Or BU- (Spare) L Drain Motor Fill Valve* Softener Regan Valve (ot all models) Door SW Fan Motor Future Vent Wax Motor (Spare) Diverter Position Switch Contact (Closed During Transitions) GY GY To Connector P (Spare) Future O.W.I* (TC, Foam, & Turbidity Sensor) 2 P4- BU- P4-2 P4- P5-2 LB P5- LB P6- BR P6- BR P6-4 BR P6-6 BR P6-7 BR P6-9 BR P7- BU P7- BU P7-4 BU P7-6 BU P8- P8- P8-4 P8-6 Black Stripe On Connector P9- V P9- V P9-5 V P9-6 V R Stripe On Connector P0-BR P0-BR P0-4 BR P0-5BR P- P-2 P- P-4 P-5 P-6 P2- P2-2 P2- P2-4 P2-5 P2-6 Temporary Connection Port For Development Tools(&Future Service Tools) This option o Fuse, jumper only P- P-2 P- P-4 P4 P5 P P7 P8 P9 P0 P P2 P P K HTR-L Relay Pilot Relay F8 Fuse F9 W2 Wire Data VCC Optional Fuse K HTR- Relay Sense Motor Relay Motor Sense Circuit Is Different For High vs. Low Power Motors AC Overfill / Leak Detection (& Pilot Relay Detection) Pilot L Test Pad For All Loads PA & PB User Interface Connector options Analog Digital Analog TC Opt Sig Foam Drive Turbo Drive V VCC Wide Data REF PC 6 7 PA PB Mechanical push-button boards 20-Pin Active overlays 9-Pin ZIF K4 Load (Current) Sense For Drain, Vent, And All Other Loads On Pilot Fan Load (Current) Sense LED Displays 4-PI Spray Arm Sensor 0-Pin Door Open Detection Return Line Volt Relays Coils Goes Through Door Switch V Power Supply Level -W Level 2-4.4W Level -7.4W VCC REF () (-5V) P2 2 4 V (+8V) In Factory Programming Port (On Top Surface Of PCB) (Depopulate In Production; Use Pads) V * CCU PC Board x 8.0 mm 2-Sided FR4 Beeper Capacitive touch LCD UI keyboards 4-PI 4-Pin P-VCC, P4 REF 2

3 ITERVAL CYCLE, OPTIO, AD STATUS LEDs HOUR WASH ORMAL START/RESUME RUIG HI TEMP DRY OPTIO SAITIZED OTE 5 CLEA OTES 5, 6, 8, 9,0 ALL OTHER CYCLE, OPTIO AD STATUS LEDs ITERVAL TIME (MI:SEC) TOTAL TIME (MAX)2:0 SOIL SESIG ITERVALS AD SESOR CHECKS THERMISTOR (TEMPERATURE SESOR) CHECK ITERVAL OTE 5 OWI (SOIL SESOR) CHECK ITERVALS OTE 6 (OTE: OWI HAS TERMISTOR BUILT I - SEE ABOVE) DIVERTER POSITIO SESOR CHECK OTE SALT LEVEL REED SWITCH/ FLOWMETER IPUT TEST OTE LOWER SPRAY ARM CHECK(IF PRESET) OTE 0 LOADS PILOT RELAY VET FILL WASH MOTOR DETERGET/RISE AID DISPESER DIVERTER DIVERTER POSITIO DRAI MOTOR HEATER FA MOTOR (IF PRESET) OTE 7 REGE (IF PRESET) LOWER SPRAY ARM MOTOR (IF PRESET) OTE 9 SERVICE DIAGOSTIC OTES Service Diagnostics Cycle HR RM STA RU HIT DRY SA CL ALL HR HR HR HR HR HR HR RM RM RM RM RM RM 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 HIT HIT HIT HIT HIT HIT HIT DRY DRY CL CL CL CL 0:06 :2 :2 :2 :2 0:0 0:40 0:05 0: 0:05 :00 2:00 0:0 :00 0:0 CUSTOMER ERROR CUSTOMER ERROR 2 CUSTOMER ERROR CUSTOMER ERROR 4 2 FIL (DIV) UPR DRY DRY DRY (SA) DIV (CL) (CL) THR OWI FIL FIL WSH WSH WSH WSH DSP DIV DIV UPR UPR UPR O O FA DIV OWI (DIV) UPR FA DRY (CL) WSH WSH WSH WSH WSH UPR FA STA RU HIT (DIV) TZ HR HR HR HR HR HR HR RM RM RM RM RM RM 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 HIT HIT HIT HIT HIT HIT DRY DRY DRY DRY DRY DRY DRY (SA) (CL) (CL) (CL) CL CL (DIV) LOW :00 :00 :00 LSA 0:05 0:02 0:05 0:02 :46 OWI 0:06 LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW DR DR DR DR HTR HTR HTR HTR HTR FA REG LSA LSA LSA :5 SRM 0:5 :2 SERVICE ERROR :2 SERVICE ERROR 2 S T A D B Y Service Diagnostics otes: To invoke the Diagnostics Cycle, perform the following while in standby: 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 Start/Resume Rapid advance may skip sensor checks as some checks require 2 complete intervals. OTE: While you are in the Diagnostic Cycle, the Start/Resume feature is turned Off (for example, Auto Resume after door interrupts) and the Start/ Resume key becomes an interval advance Invoking Service Diagnostics Cycle clears all status and last run information from memory and restores defaults. It also forces the next cycle to be a sensor calibration cycle. Drain and wash motors will pulsate on and off. Last run cycles and options returned to default. Last run Delay returns to the lowest delay increment. Calibration cycle may force an extra rinse to occur prior to Final Rinse (to assure clear water), then calibrates the OWI and the fill amount during the final rinse. Operating state returns to Standby upon completing or terminating the Service Diagnostics Cycle. 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.. Diverter will be on continuously in intervals 7 and 8. In all other diverter intervals, diverter will be on only until it reaches the intended position for that interval. 4 Press HI TEMP key in this interval to clear customer error history. 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 85 F (29 C). 6 OWI (optical soil sensor) checks: Check OWI sensor for the presence of water during the 5-second pause in interval 9 and turn on the Clean LED in interval 8 if water detected. Check OWI sensor for presence of bulk soil during pause interval 6 and turn on the Clean LED in interval 5 if bulk soil detected. Drain until OWI sensor sees the presence of air or a maximum of :52 during interval 6 and turn on the Clean LED in interval 5 if air detected. 7 Fan Motor on during upper rack washing intervals to reduce moisture buildup in door. 8 Turn on Clean LED in this interval to indicate that vent current is detected. 9 Turn CLEA LED on in this interval to indicate that the spray arm motor is working (if present). Lower spray arm (LSA) models are identified by the main lower spray arm that does not freely rotate by hand. Look for error code (F9E4) at end of service cycle for a faulty LSA motor. OTE: Inoperable LSA motor will cause LSA sensor to indicate bad status. See 9-4 error code table to diagnose. 0 Turn CLEA LED on in this interval to indicate that the spray arm sensor is working (if present). Lower spray arm (LSA) models are identified by finger-shaped sensor in tub, protruding from bottom left side of sump. OTE: Inoperable LSA motor will cause LSA sensor to indicate bad status. See 9-4 error code table to diagnose. Turn CLEA LED on in this interval to indicate that the salt level reed switch is closed. Customer Cycle Operation To quickly advance through customer cycles, invoke the Rapid Advance mode by pressing HIGH TEMP - HEATED DRY - HIGH TEMP - HEATED DRY, after starting the cycle. Then, press START/RESUME to advance through cycle intervals. 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 Ω of F9 Fuse (Top) W2 P5 P6 P7 P8 P9 P0 P P2 P (OWI) P2 (Wide Out) P P4 P5 P6 BR 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. P7 BU P8 P9 V P0 BR Dishwasher Strip Circuits P P2 Unplug dishwasher or Perform resistance checks. To check resistance of a component, disconnect harness leads first. Door Switch (To Heater) (To Wash Motor, Vent, and Loads) (To Heater) (To Wash Motor) Door Switch K K K4 Sensing Heater () Relay Pilot (L) Relay Heater (L) Relay Motor () Relay V V V P9-6 P9-5 Door Switch P0-4 Ref Wash/Rinse L Motor Power P4-2 P5-2 Pilot L Relay (Also see Door TURQ (LBU) Run Winding - 9 V Pin AUX Winding Y 6-2 Motor and Capacitor (Wash Pump) 20V, 60 Hz, 250W Sense Resistor TURQ or Jumper (LBU) 0 P5- P4- Pin K4 Motor Relay Y CAP.5 µf (Also see Door Water Heating/Heat Dry and Water Sensing with O.W.I. Sensor (Water/Air/Soil/Temperature) Pump is washing. Control monitors temperature during water heating periods. See Wash/Rinse and Water Sensing with O.W.I. Sensor (Water/Air/Soil/ Temperature) circuits. Heater L.C. P4-2 BU/ BU/ BU/ P4- P4-4 P4- K Hi-Limit Heater Element K Heater L Relay Thermostat 8Ω - 0Ω Heater Relay (Also see Door Opens 20V, 60 Hz (Also see Door 207 F - 27 F 785W Wet (97 C - 0 C) 500W Dry Electronic Control P2-6 P2-5 P2-4 P2- P2-2 P2- Pin Pin 2 Pin Pin 4 Pin 5 Pin 6 Turbidity Drive O.W.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 P2- and P2- connector disconnected from Fill L Float Use top hole of jumper (In normal position, Float Switch W2 as test point for F9. holds switch closed.) BR BR P4-2 P6-4 P6-6 P6-7 BR BR P6-9 P4- Pin Pin Pin Pin Pilot L Relay Fuse P0- Fill Valve (Also see Door F9 890Ω -,600Ω Overfill 20V, 60 Hz, 6W 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. 4

5 Drain L Use top hole of jumper W2 as test point for F9. Dispenser (Detergent and Rinse Aid) Diverter Valve Diverter Motor L L Use top hole of jumper W2 as test point for F9. BR BR P4-2 P6- P6- P4- Pin Pin Pilot L Relay (Also see Door Fuse P0- F9 Drain Motor 5Ω - 60Ω 20V, 60 Hz, 60W o test pad on P6-. Recommend using test pad on P0-. Use top hole of jumper W2 as test point for F9. Pin Pin 5 V V P4-2 P9- P9- Pin Pin Pilot L Relay (also see Door Fuse F9 Test pad on P9- might crowd P9-. Recommend using test pad on P0-. BU P4-2 P7-4 BU P7-6 P4- Pin Pilot L Relay Pin (Also see Door Fuse P0- F9 Diverter Motor,400 -,800 Electronic 20V, 60 Hz, W Control o test pad on P7-4. Recommend using test pad on P0-. P0- Dispenser Wax Motor.4K -.0K 20V, 60 Hz, 0W P4- Dispenser Solenoid V, 60 Hz, 7W Diverter Sensor Sensor Diverter Position Switch Switch closes momentarily and then reopens as the diverter reaches each potential diverter position. P-4 P- P-2 5V o test pad on P-. Recommend using test pad on P-2. Water Softener Regeneration Valve L Use top hole of jumper W2 as test point for F9. P4-2 P7- Pilot L Relay (Also see Door Fuse P0- F9 o test pad on P7-. Recommend using test pad on P0-. V V Pin Pin Regeneration Valve 890Ω -,090Ω 20V, 60 Hz, 6W P7- P4- Electronic Control Salt Level Sensing 5V (Closed when salt low) Salt Level Reed Switch P-2 Pin 9 KΩ Pin 2 P- Pin 4 Pin Pin () () Pin (Optional Flowmeter) Sensor Electronic Control Controlled Lower Spray Arm (on some models) Lower Spray Arm Motor Controlled Lower Spray Arm Sensor Pilot L Relay (also see Door o test pad on P8-. Recommend using test pad on P0-. (BU stripe on plug) Spray Arm Motor,890-2,0 Ω each coil 20 V, 60 Hz, 6 Watts (BU stripe on plug) (BU stripe on plug) PA-7 PA-9 PA-20 Drying For Heated Dry, heater is also running. See Heater circuit under Water Heating/Heat Dry and Water Sensing with O.W.I. Sensor (Water/Air/Soil/Temperature). Fan Vent Use top hole of jumper (Red stripe (Red stripe L W2 as test point for F9. on plug) on plug) (Red stripe _ (Red stripe BR + BR on plug) on plug) P0-5 P0-4 5V Pin Pin P4-2 P0- BR BR P0- P4- Pin 5 Pin P-5 Pilot L Relay (Also see Door Fuse Vent Wax Motor Fan Motor F9 600Ω -,800Ω DC Ref KΩ - 4KΩ 20V, 60 Hz, 6W 5 VDC, W Must measure resistance o test pad on P0-4. with correct polarity and Recommend using test pad on P-5. disconnected from controls. 5

6 AC Fan (not on all models) L Use top of jumper W2 as test point for F9. P4-2 Pilot L Relay (Also see Door BU Pin P7- Fuse F9 P0- o test pad on P7-. Recommend using test pad on P0-. Entry sequence: Press any keys in the sequence with no more than second between key presses. OTE: Some models have replaced the CLEA LED with COMPLETE. If no error, Clean LED stays on for 5 seconds or display shows F- or E-. ERROR - MOST RECET PAUSE PROBLEM 2 sec. OR O DISPLAY MODELS Read F# on 0.5 sec. Read E# Display on Display FUCTIO FUCTIO Read F# on Display FUCTIO Read F# on Display FUCTIO Read F# on Display ERROR 2 PAUSE PROBLEM 2 sec. OR O DISPLAY MODELS 0.5 sec. Read E# on Display ERROR PAUSE PROBLEM 2 sec. OR O DISPLAY MODELS 0.5 sec. Read E# on Display ERROR 4 - OLDEST PAUSE PROBLEM 2 sec. OR O DISPLAY MODELS 0.5 sec. Read E# on Display 0 seconds pause ITERVAL 28 ITERVAL 27 PAUSE Repeat times unless 5 sec. advanced by Start ITERVAL 26 PAUSE Repeat times unless 5 sec. advanced by Start Fan Motor 60Ω -80Ω 20 V, 60 Hz, 2 Watts ITERVAL 2 PAUSE Repeat times unless 5 sec. advanced by Start sec. ITERVAL PAUSE Repeat times unless 5 sec. advanced by Start sec. OTE: Once error codes are extracted, refer to the Service s table to diagnose and correctly resolve the root cause condition. Service s Example: 6- means Inlet Water function, Low/o Water problem. sec. Function -Control Pilot Stuck On ITERVAL 25 PAUSE Repeat times unless 5 sec. advanced by Start 2Control Software Issue sec. ITERVAL 24 PAUSE Repeat times unless 5 sec. advanced by Start 2User Stuck Key Interface sec. ITERVAL 2 Press HI TEMP key to clear errors. Hi Temp LED will blink twice to indicate errors have been cleared. Service Diagnostics Cycle SERVICE CYCLE ERROR 2 PAUSE FUCTIO PROBLEM 2 sec. OR O DISPLAY MODELS Read F# on 0.5 sec. Read E# Display on Display sec. Hi Temp LED will be on P4- P7- SERVICE CYCLE ERROR A tone will play when service error code is displayed PAUSE FUCTIO PROBLEM 2 sec. OR O DISPLAY MODELS Read F# on 0.5 sec. Read E# Display on Display Service Diagnostics with s DISPLAY TEST - ALL LEDS O BU Pin ITERVAL 22- Turns on loads and checks sensors. 6 Control detected pilot relay stuck closed. 2. Check all loads on pilot relay for shorts.. Replace control and all shorted components. Damaged or corrupted memory on control board. 2. Replace control board. Incompatible software components inside micro. Control detected Check responsiveness of each stuck key(s) in keypad or keypad. If some keys do not respond, connection. then: OTE: If any keys - Unplug dishwasher or are stuck, the stuck key(s) will be - Disassemble door and ignored and an disconnect keypad connection error recorded to from control or LCD display service history, module. but no alert to - Verify all other connections to customer. control are made. - Reassemble door but do not close door. - Plug in dishwasher or reconnect power. - Wait at least 7 seconds for control to power up completely. - Close dishwasher door and monitor control response:

7 Function 2- User Interface - Thermistor/ OWI - Stuck Key 2-o Response from UI - Open 2-Shorted FOR SERVICE TECHICIA S USE OLY Control detected A. If control is OK (no longer stuck key(s) in sees stuck keys with keypad keypad or keypad unplugged), it will respond by connection. turning on the drain motor for OTE: If any keys 2 minutes. Replace keypad are stuck, the and console. stuck key(s) will be B. If control is not OK (still ignored and an sees stuck keys with keypad error recorded to unplugged), it will not turn on service history, drain motor. Wait for at least but no alert to 0 seconds. If still no drain customer. 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 counter top 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. User interface cannot communicate with 2. Check connections between UI main and PC connector. If Loose user connection(s) is loose or if the interface wires are loose or damaged, connection. reconnect, repair or replace as needed.. Refer to service error codes table for stuck key (2-). Run the diagnostic check, item (). - If drain motor turns on, replace the console. - If drain motor does not turn on, replace the - 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. Check operation of temperature sensor in Service Diagnostics cycle. 2. Unplug dishwasher or. 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.. Unplug dishwasher or 4. Check all components and connections in the Temperature Sensing circuit with meter. Fix/ replace shorted connection/part. (See OWI Sensor strip circuit.) Function - Thermistor/ OWI 4- Wash Motor 5- Door Switch - Failed Calibration - Motor ot Running - Door Stuck Open 2- Door Stuck Closed. OWI failure.. Run Service Diagnostics to check OWI operation. OWI should see low soil with clear water. 2. Check OWI lens surface. Clean if needed.. Unplug dishwasher or 4. Check all connections in Soil Sensing circuit with meter. Fix/ replace bad connection/part. OTE: Run Diagnostics after replacing new OWI to force calibration on next wash cycle. 2. Drain hose check valve not sealing.. Loose connection in Motor circuit and/ or faulty wash motor. 2. Control Motor Drive circuit or Sense circuit.. Door was not latched within 4 seconds of pressing the Start/ Resume 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 counter top if possible.. Check operation of wash motor during diagnostics. 2. Unplug dishwasher or. Check resistances of connections in the Wash circuit. - Check for loose connections or replace wash motor. 2. If meter check of Wash Motor circuit shows normal resistance and still not getting power to the wash motor, replace Instruct customer. Refer to Use and Care Guide. 2. Loose. Check strike plate and door connection in closure force. Verify door seal is Door Switch seated properly. Check for circuit and/or door interference between dish racks switch contacts and door. Try bending strike plate stuck open and/or down for better engagement. door switch not 2. Unplug dishwasher or making contact: - Sloppy door. Check resistances of door latch assembly, switch contacts and all which can be connections in the Door Switch aggravated by circuit with meter while opening high door closure and closing the door latch. force, keeping - If high resistance with door strike plate from closed, check/fix loose fully seating. connections. - Door switch 4. Measure resistance of door (high resistance). switch contacts while checking mechanical operation of latch assembly. Check for broken plastic pieces on latch assembly. Replace latch if faulty.. 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.. With door open, verify VDC present across P9-5 and P If no voltage present, unplug dishwasher or disconnect power and replace. Open and close door and then press Start/Resume If it works now, instruct customer to open door between cycles. 2. Unplug dishwasher or. Measure resistance of door switch contacts while checking mechanical operation of latch assembly. 7

8 Function 6- Inlet Water - Low/o Water (Mechanical ) 2- Fill Valve (Electrical ) - Suds/Air in Pump 4- Float Switch Open. o water to Verify water supply is turned on dishwasher. and supply line adequate. 2. Bowls or pots Instruct customer on loading. loaded or flipped Refer to Use and Care Guide. and captured wash water.. Drain loop Check for water siphoning out of detached from tub unit: and/or improper. Allow dishwasher to complete drain connection. 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. 4. Water leaking Check for leaks under dishwasher. from dishwasher. 5. Fill valve or Turn off water supply to water line plugged dishwasher, disconnect water line with debris. to inlet valve, and inspect/clean the inlet screen of fill valve, and reconnect water. 6. Overfill switch stuck in Overfill position and/or dishwasher not level. Check other error codes to see if 6-4 also occurred. See Fill valve Check other error codes to see if electrical problem. 6-2 also occurred. See Loose connection in Fill Valve circuit and/ or open Fill Valve Solenoid. 2. Open fuse on Unplug dishwasher or disconnect power and check resistances of fill valve solenoid and all connection in the Fill circuit with meter. -Fix/replace open connection/part. Refer to Fuse Service Check in control to fill valve. Meter Check of Loads and Fuses section.. Fill Valve Drive Unplug dishwasher or disconnect circuit on the power and replace. Too many suds.. 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. 2. Bowls or pots loaded or flipped and captured wash water.. Water leaking from dishwasher. 4. Diverter disk in sump is missing.. Overfill switch stuck in Overfill position and/or dishwasher not level. 2. Drain hose check valve not sealing. Instruct customer on loading. Refer to Use and Care Guide. Check for leaks under dishwasher. Remove lower spray arm, TurboZone assembly, rear feed tube and outlet cover and verify whether the red diverter disk is installed. Remove any items stuck under the float. Verify that the float moves freely and you hear the click of the switch contacts. Check/adjust level of the dishwasher. Water 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. Function 6- Inlet water 7- Heating 4- Float Switch Open 7- Flowmeter 8- Regen Valve Electrical - o Heat. Fill valve triac on control shorted. 4. Fill valve mechanically stuck open. 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. 5. Too many suds.. 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. 6. Open fuse F9 to Refer to Fuse Service Check in fill valve and other Meter Check of Loads and triac loads. Fuses section. Disconnected or damaged flowmeter.. 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. With 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. Loose Unplug dishwasher or disconnect connection in power and check resistances of Regen valve Regen valve solenoid and all circuit, and/or connections in the Regen Valve open Regen valve circuit. Fix/replace open solenoid. connection/part. 2. Open fuse on control to Regen valve. Refer to Fuse Service Check in Meter Check of Loads and Fuses section.. Regen valve Unplug dishwasher or disconnect drive circuit on the power and replace. Control Running diagnostics clears the programmed to control and allows the heater to disable heater, but turn on again. Water heating continue running problem must be corrected, or the cycles, if it detects control will disable the heater a water heating again. See Heater circuit problem problem. below. 2. Heater circuit problem: - Open in heater. 2. Measure resistance of heater - Open connection and all components and or component in connections in Water Heating Heater circuit. circuit/heat Dry circuit. Fix/replace open connection/part.. Heater Drive circuit on the Unplug dishwasher or disconnect power and replace 8

9 Function 7- Heating 8- Draining 9- Diverter 2- Heater Stuck On - Slow Drain Heater Drive circuit on the control. Obstructed drain hose or path. disconnect power and 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. Drain Pump impeller fractured. 2. Remove Drain Pump and check impeller (normally there is some uneven resistance). If it is stripped, replace Drain Pump. 2-. Loose Unplug dishwasher or disconnect Drain Motor connection in power and check resistances of Electrical Drain Motor circuit drain motor winding and all and/or open Drain connections in the drain motor Motor winding. circuit. Fix/replace open connection/part. 2. Debris stuck in drain motor impeller.. Open fuse on control to Drain Motor. 2. Remove drain motor and dislodge debris from impeller. Refer to Fuse Service Check in Meter Check of Loads and Fuses section. 4. Drain Motor Unplug dishwasher or disconnect Drive circuit on the power and replace - Drain Motor Drive Drain Stuck circuit on the On - Can t Find Position 2- Stuck On - Disk Missing. Corroded or loose connection in diverter sensor/ motor circuit, or open/shorted sensor/motor. disconnect power and replace 2. Inspect Drain Motor and connections for overheating/ shorting. If evidence of overheating/shorting exists, replace.. Check operation in Service Diagnostics Cycle. Listen for cam clicking as it rotates or inspect shaft with mirror to see if rotating during diverter interval. If rotating, it is likely the sensor circuit. 2. Unplug dishwasher or disconnect power and check connections in Diverter Sensor and Motor circuit with meter. Fix/ replace open connections/parts.. Inspect diverter sensor for evidence of water or contaminants. If yes, replace. 2. Mechanical Check operation of diverter motor binding of diverter during diagnostics. Inspect shaft/disc. diverter shaft with mirror. If motor appears to be on (vibrates, hums), but you see limited rotation, replace diverter and seal.. Open fuse on Refer to Fuse Service Check in control to diverter Meter Check of Loads and motor. Fuses section. 4. Diverter Motor Unplug dishwasher or disconnect Drive circuit on the power and replace Diverter Drive Circuit on the Control detected diverter disk in sump is missing. disconnect power and replace 2. Inspect diverter motor and connections for overheating/ shorting. If evidence of overheating/shorting exists, replace. Remove lower spray arm, TurboZone assembly, rear feed tube and outlet cover. Verify the round diverter disk is installed. Function 9- Diverter 0- Other 4- Lower Spray Arm error - Dispenser Electrical - Drying Fan. Mechanical binding or blocking of spray arm 2. Corroded or loose connection in spray arm sensor/motor circuit.. Open fuse on control to spray arm motor. 4. Spray arm drive circuit on the. Loose connection in Dispenser circuit and/or open dispenser solenoid. 2. Open fuse on control to dispenser. Troubleshooting Guide. Check for and remove any blockage of lower spray arm. (Utensils or pot handles) 2. Run service diagnostics cycle and check for the lower spray arm operation/fault detection (ote 0). If failure exists, then:. Unplug dishwasher or Check wiring connection or damage at controlled lower spray arm sensor. 4. Check triac fuse. See Meter check of Loads and Fuses section. Replace control if open. 5. Check for open or shorted lower spray arm motor winding resistance. Replace diverter module. Unplug dishwasher or disconnect power and check 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 section.. Dispenser Drive Unplug dishwasher or disconnect circuit on the power and replace. Loose connection in fan circuit, and/or open fan motor. 2. Fan drive circuit on the Unplug dishwasher or disconnect power and check resistances of fan motor and all connections in the fan circuit. Fix/replace open connections or fan. Unplug dishwasher or disconnect power and replace OTES: For resistance checks, refer to Dishwasher Strip Circuits section. For checking operation with diagnostics, refer to Service Diagnostics Cycle section. Customer Clean LED Flashes Won t Run or Power Up ( Dead Keypad/ Console) - o operation - o keypad response - o LEDs or display Potential Check Related (s) Control programmed with self diagnostics.. o power to unit or bad connection. 2. Loose connections in dishwasher powerup circuit or between keypad(s) and Read error code from the dishwasher and refer to Service 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. Model has an Unplug dishwasher or LCD display and the control has Verify correct control is been exchanged for installed. Control should have one that is not no 4-pin user interface compatible with the connector present at PB if it LCD display is configured for an LCD module. model. Replace 4. Control detected door switch problem 5. User interface or 2. Replace UI/console and/or 5-9

10 Customer Won t Run and LED for Start/ Resume Key is Blinking Slowly Won t Run and All LEDs On Won t Start and Start/Resume Key LED Flashes Times When Start/Resume Key is Pressed Won t Accept Key Presses and Control Lock LED On One or More Keys Won t Respond or Unusual LED/ Display/Key Behavior Dishwasher Beeps Constantly (for Models with Beepers) Potential Check Related (s). By design, if the door is opened for Instruct customer. Refer to Use and Care Guide. more than 5 seconds or power is interrupted during a cycle, the user must press the Start/Resume key to resume operation. 2. Start/Resume See One or More Keys Won t key not responding. Respond.. Control detected door switch problem. Software or hardware incompatibility problem with Control looks for door to open between cycles. - Customer has not opened door since last cycle. - Door switch contacts stuck closed. Control Lockout feature accidentally turned on by customer. s Table. Instruct customer. Refer to Use and Care Guide. Press and hold Control Lock key 5 seconds to turn On/Off.. 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 problem. 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. Verify presence of vent current if model has a vent wax motor. Refer to Leaks or Drips On Cabinet or Floor. 5. User interface. 2. Replace user interface console assembly.. User opened door during cycle and closed door without pressing Start/Resume to resume cycle. 2. ormal beeper operation is excessive to customer 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 Start/Resume 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) Customer Long Cycles and/or Stuck in Certain Part of Cycle LEDs or Displays Run 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) Potential Check Related (s). As part of normal Instruct customer. Explain operation, the thermal holds and how the dishwasher pauses cycle pauses when they 2 or times during occur. the cycle for thermal holds and advances once temperature is met. 2. OWI soil sensor picking high soil cycle too often.. Run Service Diagnostics cycle to check if OWI is showing high soil with clear water. 2. Check lens surface. Clean if needed.. Unplug dishwasher or 4. Replace OWI and run Diagnostics after installing new OWI to force calibration on next wash cycle.. Diverter problem prevented water from heating (plastic tub models only). 4. A water heating problem could cause long cycles but will typically cause a water heating fault. 5. Heater takes a long time to heat water with low voltage. 6. Incoming water under 84 F (29 C). 7. Suds or air in pump requires repeated wash periods. 8. OWI or TC sensor problem.. Unit is in Sales Demo mode. 2. Open F9 ( load fuse) on control disabled loads.. Control canceled cycle due to error detected with wash motor or low water. 2. Unit in Sales Demo mode. Check for at least 00 VAC at power source..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..unplug dishwasher or disconnect power and check all connections and measure resistance in temperature sensing circuit. Replace OWI if resistance is high. 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. Run Service Diagnostics cycle to clear Demo mode

11 Customer Will ot Drain, or Excess Water Left in Dishwasher. OTE: Check error history. If no error codes for electrical problems, problem is mechanical. Do not replace 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 Poor Wash Potential Check Related (s). Drain loop check valve not sealing. 2. Customer misunderstands water level after drain.. Draining problem.. 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 problem. 5. Control canceled cycle before dispensing due to error detected with wash motor or low water.. 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 in filter cup hole after cycle. Instruct customer on proper dish loading. 2. Check/replace dispenser. Instruct customer on proper dispenser filling.. Cycle selection Instruct customer on cycle of customer not selection. Recommend High appropriate for dish Temp option for wash load. performance boost. 2. Plugged or damaged coarse screen.. Little or no wash pump flow. Inspect coarse screen in sump. Clean and replace as necessary. Instruct customer on size of soils dishwasher can properly dispose through drain system.. Diverter problem. Refer to Service s table 2. Micro filter may be plugged by hard water deposits or other materials. Clean filter. If there is apparent damage, replace filter. If there is hard water, instruct customer on proper maintenance. 4. Spray arms not. Check arm rotation. If arms rotating or plugged. 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. Plugging may be caused by hard water build-up in water delivery system or damaged pump filter. Inspect water delivery system for hard water buildup, clean. Inspect and service pump filter.. Controlled lower spray arm motor failed. Check spray arm moving during diagnostic cycle. 5. Poor wash due to draining, dispensing, and/or temperature problem. See Will ot Drain or Excess Water Left in Unit, or Detergent ot Dispensing or Detergent Left in Dispenser, or details on temperature sensing in Long Cycles and/ or Stuck in Certain Part Of Cycle. 6. Control canceled cycle due to error detected with wash motor or low water Customer Poor Wash Film or Spots On Glasses and/or Dishes Poor Dry Potential Check Related 7. Soil sensor problem. OTE: Even if no error code recorded, confirm OWI passes all OWI checks in Service Diagnostics cycle and see checks for Diverter problem. 9. Diverter disk Remove outlet cover and missing. inspect for red plastic disk through holes in outlet. Install new disk if missing. 0. Heating problem.. Softener problem (on some models).. Customer not using rinse aid and/ or heated dry. Check rinse aid gauge level on dispenser. Instruct customer how to fill and monitor, add or use rinse aid. 2. Rinse aid dispenser problem.. Hard water.check water hardness. If leaving film on hard, instruct customer to use dishes. dishwasher cleaner per packaging instructions. Also recommend the HR Wash cycle. 2.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 problem. Refer to Service 4. Detergent carryover or oversudsing. 5. Etching of glass from too much detergent at too high of temperature. 6. Diverter problems. 7. Drain loop check valve not sealing. Check water hardness. If below 0 grains, instruct customer to use less detergent and recommend the HR Wash cycle. Check water hardness. If below 0 grains, instruct customer to use less detergent and recommend the HR Wash 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 counter top if possible.. Customer not Check rinse aid gauge level using rinse aid and/ on dispenser. Instruct or dispenser empty. customer how to fill and monitor, add or use rinse aid. 2. Customer not using Heated Dry option.. Rinse aid Recommend use of Heated Dry or Smart Dry to customer. dispenser problem. 4. Vent stuck closed due to pilot relay stuck on. 5. Diverter problem prevented water from heating in final rinse (plastic tub models only). 6. Fan problem (on models with fan). (s)

12 Customer 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 Potential Check Related 7. Control canceled cycle due to error detected with wash motor or low water. 8. Heating problem.. Door opened during final rinse or dry. 2. Incoming water under 84 F (29 C). Instruct customer..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..unplug dishwasher or disconnect power and check all connections and measure resistance in temperature sensing circuit. Replace OWI if resistance is high.. Heating problem. 4. Thermistor/OWI sensor problem. 5. Intermittent door See same checks as for 5- switch/latch. connection. 6. Diverter problem kept water from heating in final rinse (plastic tub models only). 7. Line voltage too low to heat fast enough. 8. Air pressure surges in dishwasher due to washing with high suds causes brief opening of door switch contacts during final rinse.. Customer uses non-dishwasher safe dishes or loads plastic dishes directly over heater. 2. Temperature sensing problem.. Water heating problem. Heater stuck on. 4. Water heater displaced from mounting clip and/ or pulled off center. oisy Operation. Spray arm stalled or blocked and spraying on the door. Check power source. Confirm at least 00 VAC. Instruct customer. Inspect heater. Adjust back into position if needed. - Instruct customer if blocked. - Check spray arm rotation and inspect for plugged nozzles. If plugged, clean nozzles and confirm filters are installed properly. - Controlled lower spray arm motor failed. Check spray are moving during diagnostic cycle. 2. Diverter problem.. o or low water. (s) , , 6-4 Customer oisy Operation Leaks or Drips On Cabinet or Floor Potential Check Related 4. Drains too long.. Long drain due to OWI sensor problem. Refer to Service s table for Slow drain problem. Refer to Service s table for Loose connection in vent circuit and/or open vent wax motor. 6. Open fuse on control to vent. 7. Vent drive circuit on the 8 Fan runs (makes noise) after cycle completed (on models with fan). Unplug dishwasher or disconnect power and check 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. Unplug dishwasher or disconnect power and replace Dishwasher is designed to keep fan running after cycle to avoid moisture buildup in dishwasher. Fan will turn off if door is opened longer than 5 seconds. Instruct customer. 9.Excessive fan. Check fan operation during noise due to faulty Service Diagnostics test fan (on models with cycle. fan). 2. Unplug dishwasher or. Replace fan if fan does not spin freely.. Loose connection in vent circuit and/or open vent wax motor. 2. Open fuse on control to vent.. Vent drive circuit on the Unplug dishwasher or disconnect power and check 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. Unplug dishwasher or disconnect power and replace 4. Fan problem (on models with fan). 5. Too many suds. 6. Leaking dishwasher. 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 door/tub gasket and all water connections under dishwasher. Refer to Service Check error history for Float is likely to occur if unit is significantly out of level and leaning forward. Instruct customer to leave door open a few minutes before re-closing, if opened while dishwasher is hot. (s) W075880C 205. All rights reserved. 2 9/5