Burner troubleshooting
Pump is running
Burner is running
Burner will not fire
Check fuel supply
Check transformer by arching an
insulated handle across contacts.
Disconnect power supply. Is fuel filter
clean? Does fuel flow freely? Is fuel at
bleeder on fuel pump?
Test fuel solenoid circuit:
1. Disconnect power supply
2. Unplug black & yellow leads
3. Plug black female into yellow male
4. Connect power supply
5. Start machine using normal procedure
Does burner fire?
Test Thermostat circuit:
1. Disconnect power supply
2. Connect the yellow leads together
3. Plug orange male into black female
4. Connect power supply
5. Start machine using normal procedure
Does burner fire
Replace thermostat
While machine is running, disconnect
fuel line at burner housing. Is fuel
flowing?
Fill fuel tank
Replace transformer
Check for plugged burner nozzle and
properly spaced electrodes. If ok,
replace electrodes.
Clean or replace filter. Clean or look
for pinched hoses.
Clean or replace fuel solenoid
Test flow switch circuit:
1. Disconnect power supply
2. Connect the black leads together
3.Plug the yellow male into the orange
female
4. Connect power supply
5. Start machine using normal procedure
Does burner fire?
Tank empty
Tank full
Transformer does not operate
No
No
No
Transformer operates
No
Yes
Yes
Yes
Yes
Clean or replace flow switch
Yes
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