Sunfire SF80 - Troubleshooting

31
+1 (855) 251-1649
sunfireheaters.com
If your issue was not described here, or for further assistance, please contact your local AUTHORIZED SUNFIRE
DEALER, find more information at sunfireheater.com/support, 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 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.
Contact SunFire or your local dealer.
Flame sensor is sensing light
(GREEN light on) / 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. 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 the 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 misaligned /
dirty / defective
Clean flame sensor with a soft, damp cloth and confirm
that it is oriented toward the combustion chamber when in
operational position. Replace if defective.
4. Fires and then fails after 30 sec-
onds / Heater experiences intermit-
tent shutdown
NOTE: If the pump sounds loud at
times during normal operation (like
during initial priming), this typically
indicates either a suction leak or air
bubble in the fuel line.
Air bubble in fuel line Use the PRIME switch to clear the fuel system of air.
If the problem persists, remove the fuel filter and fill it with
fuel. Then, reinstall the filter and reattempt priming.
Suction Leak Tighten all fuel-pickup pipe fittings and make sure the fuel
filter is tightened snugly to the filter head. Do not over
tighten.
Dirty fuel filter Change the fuel filter.
Clogged nozzle Replace the 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
(Light flame whisking may occur at
cold start but should dissipate quickly)
Nozzle is dirty or clogged Replace the 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 the nozzle.
Fuel pump defective Contact SunFire or your local dealer.
Troubleshooting: