Table of Contents
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HEATER PROBLEMS
YES
NO
Is the heater heating?
Overheating
YES
Check thermocouple
YES
OK?
CHECK
NO
CALIBRATION
REPLACE
NO
Is power getting to the heater?
HEATER
(check 240V / 110V)
YES
See PCB
PROBLEMS
Is power getting to the
thermal trip?
NO
(check 240V / 110V)
YES
THERMAL TRIP
FAULT – RESET /
Is power getting through
REPLACE
the thermal trip?
NO
YES
(check 240V / 110V)
Disconnect power and remove power loom from element connectors
Measure across the elements for continuity and check for earth leaks
NO
NO
Earth leakage?
Normal Ohms reading?
YES
YES
OPEN CIRCUIT
OPEN CIRCUIT
See PCB
HEATER -
HEATER -
PROBLEMS
REPLACE
REPLACE
See PCB
PROBLEMS
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