Fault Finding - Fisher & Paykel DE09 Service Manual

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6

FAULT FINDING

6.1 Fault Finding
Fault
• No operation.
• No heat.
Cause
• No power to unit.
• No power at terminal C on
timer.
• Hi-limit thermostat open circuit
(electric only).
• Start button not operating.
• Idler switch open circuit.
• Motor seized or open circuit.
• Door switch open circuit.
• Selector set on No Heat/Fluff.
• No power to terminal A on the
timer.
• No motor operation.
• No Power from Terminal 16
on the selector.
• The safety, inlet, or drum
outlet thermostat failure.
• The elements are open circuit
(electric model only).
• No gas valve operation (gas
model only).
• Open circuit motor switch.
• Resupply power to the unit.
• Replace timer.
• Replace hi- limit thermostat &
check for possible overheating
issues (see overheating).
• Replace selector switch
assembly.
• Check belt condition & replace if
necessary.
Check idler arm or pulley &
replace if necessary.
Check idler switch operation and
replace if necessary.
• Check motor spins freely and
check windings. Replace if
necessary.
• Replace door switch.
• Reset selector.
• Replace the timer.
• See No Operation section.
• Replace the selector.
• Check thermostats for continuity
and resistance of the resistors.
Replace if necessary.
• Replace elements.
• Check flame failure operation.
Check gas coil continuity.
Change gas valve assembly.
• Replace the motor.
42
Repair