Chart 4. Motor runs, gas ignites but stays on for only short period
Before proceeding, ensure polarity of 13Amp supply socket and earthing is correct
Is flame failure electrode
correctly positioned, and
undamaged? Is wire to terminal
9 undamaged and connections
tight? Is rear drum seal
complete? Is rear elbow and
plinth attached correctly?
Exchange full sequence control
and/or gas control relay PCB
and/or thermostats as
necessary until gas stays on.
Is weight of load suitable? Is
filter clean? Is vent hose or
terminal unobstructed? Is vent
terminal unaffected by wind
conditions that may cause back
pressure?
Start
No
No
No
No
Check gas pressure with all other
appliances in operation does gas
stay ON?
Rectify as necessary does gas
stay ON?
Yes
Yes
Yes
Yes
Yes
Machine operating. Instruct user
as necessary.
11
