Thermo Pride OME-72D36 Installation And Service Manual page 38

All installations and services must be performed by qualified service personnel.
After pre-purge, does the
oil primary produce a
spark at the
ignition electrodes?
Yes
While ignition electrodes
are sparking does fuel
valve open?
Yes
No
Is there 120 VAC across
the ignition transformer?
Check wiring to the ignition transformer and the
electrodes. Also, check ignition
electrode gap. Reset if necessary.
Replace electrodes or ignition transformer.
No Does the oil solenoid
valve have 120 VAC across it
during the ignition attempt?
Check wiring to fuel valve.
If valve does not open,
replace fuel valve.
No
Yes
Try resetting the oil primary control
No
Yes
36
Try resetting the oil primary
control by depressing the
RESET button. Check cad cell
function. If all else fails,
replace the oil primary.
by depressing the RESET button.
If this does not work, replace the
oil primary.