Fisher & Paykel AD55 Series, Service Manual, Page: 23 / 28

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ELECTRONIC MODULE CONNECTION CHECK
The following is a quick test procedure to
check that the electronic module is correctly
wired to the dryer and that the dryer is
operating correctly.
A. LED & BUTTON TEST
1. Press and hold LOCK, then press>
DRYNESS so that both buttons are down
at the same time.
- All LED’s should be on:
2. Press ON/OFF button to turn LED’s off.
3. Press ON/OFF button and check all other
buttons are working. Check that buzzer is
sounding.
B. DRUM ROTATION &
ELEMENT CHECK
1. Connect an amp meter or watt meter in
the mains supply to ED55/56.
Turn dryer on and set to REGULAR
temperature, then press START/PAUSE
button to start.
Amp meter should read approx 8.5 amps
OR watt meter should read 2000 watts.
Note 1: If dryer does not start, check the
door switch adjustment. See “Other Fault
Codes” under FAULT CODES.
Note 2: A fault on the circuit board will
cause a fault code to be displayed on the
Dryness LED’s about 12 secs after the
initial pressing of the START/PAUSE
button – overwriting the “NORMAL”
display – see FAULT CODES.
2. Press START/PAUSE button twice.
•
Dryer should stop and reverse
direction.
•
Amp meter should again read approx
8.5 amps OR watt meter should read
2000 watts.
3. Press START/PAUSE and set to LOW
temp setting. Press START/PAUSE.
4. Press START/PAUSE and set to Cold
and run again.
Meter should read approx 0.5 amps or 130
watts.
C. EXHAUST SENSOR &
DOOR SWITCH TEST
1. Start dryer running REGULAR or LOW
TEMPERATURE mode; then press and
hold LOCK; then press START/PAUSE
button.
Note: This advances the drying cycle so that
a shorted temperature sensor can be
detected. (See Fault Codes – Shorted
Exhaust Sensors).
2. Press and hold LOCK; then press
< DRYNESS. Release and press
START/PAUSE.
•
If there is a fault with the exhaust sensor,
the fault code will be immediately
displayed within 1 second with the beeper
sounding (see fault codes).
3. Open the door and the machine should
pause. (The three delay LED’s will turn on
with the door opened). ED56 only
END OF TEST