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If your issue was not described here, or for further assistance, please contact your local AUTHORIZED
SUNFIRE DEALER or find more information at sunfireheater.com/support where you can access the
latest support information and manuals. Or call the manufacturer directly at (855) 251-1649.
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
1. Will not start.
Main electrical power circuit
breaker tripped or blown light
bulb or fuse (AMBER light off)
Reset breaker or replace fuse
If power is present but AMBER light is off, replace bulb
Primary control safety tripped
(RED light illuminated)/primary
control defective
Reset/test components, replace if needed
Flame sensor is sensing light
(GREEN light on)/flame sensor
defective
Point the dome face away from any bright light sources. If
problem persists, contact SunFire or your local dealer.
Thermostat circuit is OPEN Be sure the thermostat jumper is securely connected. If us-
ing a thermostatic control, be sure it is connected properly
and set to call for heat.
Tip switch contacts are open If plugged in and AMBER light is on. It may be a tip switch
issue. Make sure SunFire unit is level. If level, tip switch may
be defective.
2. Attempts to fire but does not
establish a flame
Unit is not primed Use the PRIME switch to fill the fuel system.
Clogged nozzle Replace nozzle
Dirty fuel filter Change the fuel filter.
Air bubble in fuel line Use the PRIME switch to clear the fuel system of air.
Suction Leak Tighten all fuel-pickup pipe fittings and make sure the fuel
filter is tightened snugly to the filter head.
Ignition system defective Replace defective component.
3. Fires and then persistently fails
within 30 seconds
Flame sensor is dirty/defective Clean flame sensor with a soft, damp cloth. Replace if
defective.
4. Fires and then persistently fails
after 30 seconds
Dirty fuel filter Change the fuel filter.
Clogged nozzle Replace nozzle
Contaminated fuel supply Drain tank from plug, clean and fill with clean fuel.
Improper power supply Check power supply. If using a generator, run generator
for 20 minutes and retry. If using an inverter, try a clean
power supply. Try different power supply.
5. Black smoke or whisking flames
protrude through holes in dome face
Nozzle is dirty or clogged Replace nozzle
Flame needs adjustment See Flame Adjustment section
6. Small flame/low heat output Flame needs adjustment See Flame Adjustment section
Dirty fuel filter Change the fuel filter.
Clogged nozzle Replace nozzle
Fuel pump defective Contact SunFire or your local dealer.
Troubleshooting:
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