KitchenAid KMTM704E Series Technical Education page 91

Service Error Codes (continued)
FUNCTION PROBLEM
CODE CODE
3-THERMISTOR/ 1-OPEN
OWI
2-SHORTED
3-THERMISTOR/ 3-FAILED
OWI
CALIBRATION
4-WASH MOTOR 3-MOTOR
NOT RUNNING
5-DOOR 1-DOOR
SWITCH STUCK
OPEN
For Service Technician Use Only
CAUSES
- OPEN CONNECTION OR COMPONENT IN
TEMPERATURE SENSING CIRCUIT.
- OPEN OR FAULTY TEMPERATURE SENSOR
- TEMPERATURE SENSOR INPUT ON CONTROL.
- INCOMING WATER TEMPERATURE ABOVE
167F(75 C)
- SHORTED CONNECTION OR COMPONENT IN
TEMPERATURE SENSING CIRCUIT.
- SHORTED OR FAULTY TEMPERATURE SENSOR.
- TEMPERATURE SENSOR INPUT ON CONTROL.
OWI FAILURE
DRAIN HOSE CHECK VALVE NOT SEALING.
LOOSE CONNECTION IN MOTOR CIRCUIT AND/1-
OR FAULTY WASH MOTOR.
CONTROL MOTOR DRIVE CIRCUIT OR SENSE
CIRCUIT.
DOOR WAS NOT LATCHED WITHIN 4 SECONDS
OF PRESSING THE START / RESUME KEY.
LOOSE CONNECTION IN DOOR SWITCH CIRCUIT
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
DIAGNOSTICS & TROUBLESHOOTING
WHAT TO CHECK
1. CHECK OPERATION OF TEMPERATURE SENSOR IN SERVICE
DIAGNOSTICS CYCLE.
2. UNPLUG DISHWASHER OR DISCONNECT POWER.
3. CHECK ALL COMPONENTS AND CONNECTIONS IN THE
TEMPERATURE SENSING CIRCUIT WITH METER, FIX/REPLACE
OPEN CONNECTION / PART.
1. CHECK INCOMING WATER TEMPERATURE.
2. CHECK OPERATION OF TEMPERATURE SENSOR IN SERVICE
DIAGNOSTICS CYCLE.
3. UNPLUG DISHWASHER OR DISCONNECT POWER.
4. CHECK ALL COMPONENTS AND CONNECTIONS IN THE
TEMPERATURE SENSING CIRCUIT WITH METER, FIX/REPLACE
SHORTED WIRES / PART. (SEE OWI SENSOR STRIP CIRCUIT)
1. RUN SERVICE DIAGNOSTICS TO CHECK OWI OPERATION. OWI
SHOULD SEE LOW SOIL WITH CLEAR WATER.
2. CHECK OWI LENS SURFACE. CLEAN IF NEEDED.
3. UNPLUG DISHWASHER OR DISCONNECT POWER.
4. CHECK ALL CONNECTIONS IN SOIL SENSING CIRCUIT WITH
METER. FIX/REPLACE BAD CONNECTION/PART.
NOTE: RUN DIAGNOSTICS CYCLE AFTER INSTALLING NEW OWI
TO FORCE CALIBRATION ON NEXT REGULAR WASH CYCLE.
DIRTY WATER BACKS INTO DISHWASHER AFTER DRAINING.
1. 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).
1. CHECK OPERATION OF WASH MOTOR DURING DIAGNOSTICS.
2. UNPLUG DISHWASHER OR DISCONNECT POWER.
3. CHECK RESISTANCES OF CONNECTIONS IN THE WASH CIRCUIT.
4. CHECK FOR LOOSE CONNECTIONS OR REPLACE WASH MOTOR.
1. UNPLUG DISHWASHER OR DISCONNECT POWER.
2. IF METER CHECK OF WASH MOTOR CIRCUIT SHOWS NORMAL
RESISTANCE AND STILL NOT GETTING POWER TO THE WASH
MOTOR, REPLACE CONTROL.
INSTRUCT CUSTOMER. REFER TO USE & CARE GUIDE.
1. 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. UNPLUG DISHWASHER OR DISCONNECT POWER.
3. 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.
1. WITH DOOR OPEN, VERIFY 13 VDC PRESENT ACROSS P9-5 AND
P9-6.
2. IF NO VOLTAGE PRESENT, UNPLUG DISHWASHER OR DISCONNECT
POWER AND REPLACE CONTROL.
KitchenAid 2015 Microfiltration Dishwashers
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