Propane Heater
HEATER FAILS TO START (MOTOR DOES NOT RUN)
CAUSE REMEDY
Fuse defective or burnt out Check fuse; replace if necessary
Electrical connection(s) defective Check all electrical connections, including
ground; repair any defects
Full voltage not available at heater Check for power at the heater: at least 11
VDC with heater turned on. Trace system to
find any fault(s).
Motor defective Check motor. Replace if necessary
MOTOR RUNS, BUT NO COMBUSTION
CAUSE REMEDY
Fuel supply blocked Check fuel supply by loosening the fitting on
the outside of the heater and checking for
propane odor. If propane odor is present,
pull off the igniter wire completely and
remove the igniter. Try to start the heater
and listen for the solenoid click. Check for
the odor of propane in the burner. If propane
odor is present at bulkhead fitting, but not
the burner head, the solenoid valve is
defective or contaminated with some foreign
object. The solenoid valve can become
contaminated when a liquid takeoff bottle is
used instead of the required vapor take-off
bottle. If the fuel system is contaminated,
the lines and solenoid must be cleaned with
a degreasing solvent.
Temperature control &/or microswitch
defective or out of adjustment
Check temperature control switch and
microswitch and microswitch for
adjustment. Adjust, repair, or replace as
necessary. See Section 6, “Repairs and
Adjustments”.
T300-1_T500-1_T780
Troubleshooting
424 P/N 12261-683
REVISED: January 2015
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