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Typical faults assuming all wiring is correct
(ensure programmer is set to manual):
Symptom Fault
HLO on switching On mains Component fault on main PCB, incorrect wiring
HLO on turning On oven/grill Fault on control board / potentiometer,
incorrect wiring, open circuit solenoid.
Oven start up, burner lights and Short circuit thermistor assembly.
immediately goes out, ready light on Note: at room temperature, thermistor
resistance is approximately 100 kΩ.
Oven fails to ignite (check that 1. Incorrectly positioned or open circuit spark
electrode sparks correctly) electrode (note both grill and oven
electrodes must be connected).
2. Faulty solenoid valve.
3. Gas not at appliance.
4. Blocked injector jet.
Oven goes out before set 1. Incorrectly adjusted spark electrode (low
temperature is reached flame current).
2. Low gas pressure.
3. Incorrectly positioned potentiometer or
indicator disc.
4. If oven goes out after approximately 4
mins, this is due to a disconnected or open
circuit thermistor.
Oven fails to re-ignite after set 1. Incorrectly set spark electrode.
temperature is reached 2. Low Gas Pressure.
Oven fan fails to start 1. Open circuit in programmer.
burner does not light 2. Component failure on main board
3. Component failure at control board.
FAULT FINDING
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