Manual Part No: 933929-01
MD Gas Convection Range
Page 24 of 32
Manual Rev No: 1
Service and Maintenance
Service and Maintenance
Service and Maintenance
Service and Maintenance (cont.)
Fault Finding.
FAULT
POSSIBLE CAUSE
REMEDY
OVEN FAILING
WHILST IN COOKING
CYCLE
Pilot burn down. When the oven is
cold, the pilot flame should have a
length of approx. 25-35mm, or
20-25mm when hot.
Check injector size. If partially
blocked clean and re-fit.
Spark/Flame Detection Electrode
may have cracked insulation,
allowing moisture to track flame
current down to earth
Fit new electrode
Poor or broken connection on the
electrode lead.
Repair connection or replace lead
Pilot head in contact with main
burner, thus affecting flame current
Re-position pilot body to give
approx. 6mm clearance
Air pressure failing as oven gets
hot
Check air pressure whilst oven is
hot (200ºC). If below 1.5 mb, re-
position air sensing pipe closer to
fan.
Whilst oven is initially warming
from cold, water may condense in
the silicone tube causing a
temporary blockage in switch.
This fault is caused by a leak in the
joints at the top or bottom of the
pipe. No air should flow in this
pipe at all. It is only static pressure
that activates the switch
Ensure that the silicone tube is
fitting correctly at the top and
bottom joints.
Do NOT use tie wraps on these
joints.