-15-
Revision 3/F3601
5.2 OVEN
FAULT
POSSIBLE CAUSE
REMEDY
PIEZO IGNITOR NOT
SPARKING
Short in high tension lead.
(Refer fault diagnosis 6.1.3)
Piezo faulty.
(Refer fault diagnosis 6.1.3)
Replace lead.
(Refer service section 6.4.1)
Replace piezo.
(Refer service section 6.4.2)
PILOT WON’T LIGHT
Knob on gas control won’t go
fully in.
No gas supply.
Gas pressure too low.
Blocked pilot spud.
Remove obstruction. Correct
control / wrapper mounting.
Replace gas control.
(Refer service section 6.4.4)
Ensure gas is connected and
on (bottles not empty).
Check gas supply pressure.
(Refer specifications section)
Clean or replace pilot spud.
Refer service section 6.4.6)
PILOT FLAME SMALL
Gas pressure too low.
Pilot adjustment screw out of
adjustment.
Pilot spud restricted.
Check gas supply pressure.
(Refer specifications section)
Adjust pilot adjustment screw.
(Refer service section 6.5.6)
Clean pilot spud.
(Refer service section 6.4.8)
PILOT GOES OUT WHEN
KNOB RELEASED
Releasing knob before the
thermocouple heated.
Pilot flame too small.
(Refer fault:Pilot Flame Small)
Thermocouple faulty.
(Refer fault diagnosis 6.1.2)
Hold control in for longer (30 s),
see if pilot will stay lit.
Correct fault.
Replace thermocouple.
(Refer service section 6.4.9)
PILOT FLAME YELLOW /
LAZY
Gas pressure incorrect.
Restriction in pilot spud or
aeration.
Check gas supply pressure.
(Refer specifications section)
Clean or replace as required.
(Refer service section 6.4.8)
PILOT GOES OUT WHEN
MAIN BURNER COMES ON
Incorrect gas pressure.
Faulty gas control.
Check supply / adjust pressure.
(Refer specifications section)
Replace gas control.
(Refer service section 6.4.4)
PILOT GOES OUT WHILE
OVEN IN USE, CAN RE-LIGHT
Gas supply - incorrect or
fluctuating pressure.
Thermocouple faulty.
(Refer fault diagnosis 6.1.2)
Draught at installation (blowing
pilot out).
Check supply / adjust pressure.
Replace thermocouple.
(Refer service section 6.4.9)
Shield oven from excessive
breeze.
