Manual Part No: 932971-01 MD Gas Convection Oven
Page 24 of 32
Manual Rev No: 1
Service and Maintenance (cont.)
Fault Finding.
FAULT POSSIBLE
CAUSE
REMEDY
Poor or broken earth wire. Polarity
Of live and neutral incorrect
Repair poor or broken wire
Connection. Ensure that live and
Neutral connections are correct
PILOT LIGHTS
MOMENTARILY
AND ELECTRODE
CONTINUES TO
SPARK UNTIL UNIT
SHUTS DOWN
The pilot flame is too low in height
or it is burning in an unstable
condition
Check pilot injector size. Clean
Injector and pilot assembly if
Required. Check gas pressure
Failed 5 amp fuse, located at the
rear of oven. Check to see if oven
Interior lamp is alight.
Check fuse for continuity. If it has
failed check all possible reasons
For failure. Rectify fault before
replacing fuse.
Door micro-switch, mounted on
rear panel, is not operating or
broken.
Possible misalignment between
Door actuating rod and the micro-
Switch actuating arm. Adjust to
obtain correct alignment if
required or replace switch if
broken.
Failed Air Pressure Switch giving no
output feed to Full sequence
Control Unit
Check output from Air Pressure
Switch. Replace if faulty.
Failed Capacitor
Check capacitor. Replace if
necessary.
FAN NOT ROTATING
WITH OVEN
SWITCHED ON AND
DOOR CLOSED
Failed Motor
Check supply to Motor. Of supply
to Motor is OK replace Motor.
Thermostat not turned on or oven
up to temperature.
Turn on thermostat
Main burner solenoid coil has failed Replace coil
PILOT LIGHTS
SATISFACTORY BUT
MAIN BURNER WILL
NOT LIGHT UP.
Main burner injector has a blockage Clean and re-fit
