Fisher & Paykel AD55 Series, Service Manual, Page: 24 / 28

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FAULT CODES
If a fault should develop in the temperature
measurement system of the ED55/56 control
system, a fault code will be displayed on the
front panel.
A fault code is distinguished from normal
display in that only a combination of the 4
dryness LED’s will be on and with the beeper
sounding on and off.
If a fault code should appear, first switch the
dryer off at the wall socket or remove the
plug. Switch on again, if fault re-occurs use
the following codes to diagnose the fault.
NOTE: Pressing the POWER button will
clear the fault code.
The faults and their respective fault code that
can be checked and serviced in the filed are
as follows:
Faulty Exhaust Sensor –
Code: 0101 pr 1001
OR
Action:
•
Unplug exhaust sensor. Check
resistance of sensor. (See Testing
Exhaust Sensor). If faulty, replace.
NOTE: A shorted exhaust sensor can also
be sensed by the Temperature Measurement
System as a very low temperature reading.
Remember the sensor decrease in resistance
as the temperature decreases. To stop a
fault code showing at very low temperatures
(below 0
o
), this fault code will not show until 5
minutes after the dryer has started. This
allows the sensors time to be heated up by
the exhaust air. up by the exhaust air.
Refer EXHAUST SENSOR AND DOOR
SWITCH TEST to eliminate this delay.
Exhaust Sensor Shorted to
Cabinet:
Code: 1010
Action:
•
Unplug exhaust sensor. Check
resistance between sensor wires and the
dryer cabinet. There should be no
connection between the wires and the
cabinet.
•
If there is a short, inspect the exhaust
sensor harness to trace the cause of the
short.
Over Temperature
Code: 1101
Cause: If the exhaust air temperature is
above 90
o
C a fault code is given. The dryer
should not reach this temperature in normal
operation.
Action:
•
Check the lint filter and exhaust duct for
any blockage or restriction to the airflow.