Maytag Amana PMH Series Service And Troubleshooting page 34

SERVICING
Digital Board Diagnostics
If a failure is detected on the digital board, there will be a
green light constantly lit up. This light is located under the
OFF touch pad button. The board will need to enter in the
Diagnostic Mode to determine failure code and procedures
to follow to correct problem.
Diagnostic Maintenance & Status Report
The Diagnostic Maintenance & Status Report Mode pro-
vides detailed information on PTAC control operation and
operational status including present modes, failures, airflow
restriction warnings, operating temperatures, and past
failures. The lower right hand dot on the center display
flashes in this mode. In some cases the green LED located
in the lower left hand corner of the touchpad below the OFF
key will also be lit. This Green LED "Status Light" only illu-
minates if there is an status code that has been activated
and should be reviewed. In most cases, this light indicates
that the indoor room filter is dirty should be cleaned or re-
placed. NOTE: Dirty filters cause the unit to consume more
energy than normally needed to condition a room. Once
the filter has been cleaned or replaced, the LED should go
out. If the LED is still illuminated after the filter has been
cleaned, activate the Diagnostic and Status mode to view
any active codes. The unit may need additional cleaning or
maintenance of the evaporator or condenser coils. Please
perform this step before calling a servicer. A servicer
should be called only if cleaning the filter or coils does not
clear the status code or the code indicates that servicer
should be called.
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