Maytag MHWC7500YW0 Manual page 16

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY
WASHER
DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE
F 30
DOOR LOCK BROKEN
OR DOOR SWITCH ERROR
It is detected that the door switch is open while the
door is locked for more than 2 seconds.
Possible Causes/Procedure
1. Push the door and verify that it is completely closed.
2. Verify CCU operation by running a Quick Diagnostic
Test or any cycle.
3. Verify that the switch contacts are stuck open. If
open and the door is closed, replace the door switch
mechanism.
F 88 SUDS LOCK (OVERDOSE OF DETERGENT
DETECTED DURING THE WASH CYCLE)
If suds are detected continuously by the pressure
switch during drain or spin, the washer will enter
Suds Detection mode. The washer will fill with 3/4
gallon (2.67 liters) of water, then rest for 10 minutes
with no tumbling. Washer will then drain. If error occurs
during spin cycle, the washer will then start spinning.
Possible Causes/Procedure
If too much detergent was used:
– Run the washer through a RINSE/SPIN cycle.
– Run a NORMAL cycle without adding any
detergent. This should clear the washer of the
excess detergent.
1. Check the drain hose and make sure it is not
plugged or kinked.
2. If the drain standpipe is higher than 9 feet, this can
cause pump cavitations resulting in the same failure
code.
3. Unplug washer or disconnect power.
4. Check wire harness connections to the drain pump,
pressure switch, and Central Control Unit (CCU).
5. Check/clean drain pump filter of foreign objects.
6. Plug in washer or reconnect power.
7. Check drain pump.
8. Check the pressure switch and pressure switch
hose.
9. Verify CCU operation by running a Quick Diagnostic
Test or any cycle.
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