186
E87
E87: User Interface microcontroller fault
E87
User Interface defective.
Checks to perform:
Replace the User Interface Board and repeat the Diagnostic Cycle to check for any further alarms.
E91
E91: User interface and Main Board communication error
E91
Wiring problem, Motor Control Board defective, Main Control Board defective,
User Interface Board defective.
Checks to perform:
WARNING
Check that all the connectors are correctly inserted.
WARNING
Check that all the connectors are correctly inserted.
Is the wiring between Main Control Board, Motor Control
Board and User Interface Board proper? (Check for the
continutity)
Replace / Repair the wiring and repeat the Diagnostic
Cycle to check for any further alarms.
Replace the User Interface Board and check for further
alarms. Is the appliance ok?
Appliance is ok
Replace the Motor Control Board and check for further
alarms. Is the appliance ok?
Replace the Main Control Board and repeat the
Diagnostic Cycle to check for any further alarms.
NO
Y
E
S
YES
N
O
NO
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