Troubleshooting - Midea WQP6-3602E Series Technical Service Manual

Troubleshooting

SYMPTOM CHECK FOR THE FOLLOWING
Error:E1 The water supply is turned off.
（
Defective water fill valve.
Dishwasher
Low water pressure.
will not fill with
water or will not
Obstructed water fills valve or hose.
fill properly.）
Damaged or defective wiring.
Defective pressure switch for high water
level safeguard.
Defective flowmeter.
Heavy water usage elsewhere in home.
Defective PCB assembly
Dishwasher will Defective drain pump.
not
Obstructed drainhose
pump out.
Defective PCB assembly
Damaged or defective wiring.
Low input voltage.
Error:E3
Defective Thermal resistor
Damaged or defective wiring.
Dishwasher runs
Too little water fill.
but. will not heat.
Defective
switch assembly.
Defective heating element.
Defective PCB assembly
Error : E4 Defective
safeguard
（overfall alarm）
Damaged or defective wiring.
Defective PCB assembly
Water leaks from dishwasher.
Do not work The door not close well
when press start
Defective door switch contacts.
Defective door handle assembly.
Damaged or defective wiring.
Defective PCB assembly
Too little water Dishwasher not level.
fill.
Defective flowmeter.
Clogged filter assembly.
Water siphons out
Dishwasher runs Defective door switch contacts.
with door open.
Defective door lock assembly.
Damaged or defective wiring.
Defective PCB assembly
Motor hums but Defective motor bearings.
will not start or
Defective motor capacitor.
run.
Damaged or defective wiring.
Improper motor voltage.
Motor trips out on Motor windings shorted.
internal thermal
Improper motor voltage.
overload
Defective motor capacitor.
micro-switch of pressure
micro-switch for overfall
REMEDY
Turn the water supply on.
Replace the water fill valve.
Minimum water pressure of 20 PSI.
Disassemble and clean the water fill valve and
hose.
Repair the wiring.
Replace the pressure switch.
Replace the flowmeter
Use dishwasher when water usage is at a
minimum.
Replace the PCB assembly
Replace the drain pump.
check the drainhose
Replace the PCB assembly
Repair the wiring.
The lowest input voltage is 198V
Replace the Thermal resistor
Repair the wiring.
See "Too little water fill."
Replace the micro-switch of pressure switch
assembly.
Replace the heating element.
Replace the PCB assembly
Replace the micro-switch
Repair the wiring.
Replace the PCB assembly
See "Water leaks from dishwasher"
close the door
Replace the door switch.
Replace the door handle assembly.
Repair the wiring.
Replace the PCB assembly
Level the dishwasher.
Replace the air breaker
Clean the filter assembly.
Clean or Replace the air breaker
Replace the door switch.
Replace the door lock assembly.
Repair the wiring.
Replace the PCB assembly
Replace the motor.
Replace the motor capacitor.
Repair the wiring.
Replace the motor.
Replace the motor.
Replace the motor.
Replace the motor capacitor.
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