Ignition pack defective or inoperative Check for spark by holding an insulated-
handle screwdriver with the shaft grounded
and the tip approximately 1/8” away from
the high tension lug of the ignition coil. There
should be a continuous strong spark. If no
spark is produced, check that there is
voltage applied to the ignition pack. If input
voltage is present and no spark or a weak
spark is produced, replace or repair the
ignition pack.
Tilt switch defective, improperly mounted or
not getting power
Check tilt switch. The switch must be secure
in its bracket and be in the vertical position
with the electrical leads pointing down.
Check leads on both sides of switch for
power. Replace if defective.
Igniter defective or inoperative Check the igniter. To check, shut off the fuel
tank and depress the start switch until the
lines are purged of fuel. Remove the burner
head and check the gap between the igniter
and the burner tube. It should be 1/16” to
1/8”. With the burner head grounded, move
the STARTRUN- OFF switch to the START
position and check the gap for spark. If no
spark is produced, the igniter may be dirty
or defective. Before removing the igniter
from burner head, check inside the burner
head to determine if any carbon threads or
chips are present which could short the plug.
Fuel not suitable for temperatures
encountered
Check with your propane supplier to be sure
your fuel is suitable for the temperatures
encountered. Around -10°F, propane may
not produce enough pressure to pass
through the regulator.
HEATER REMAINS ON BURNER CYCLE AFTER HEAT DEMANDS ARE MET
CAUSE REMEDY
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.
Bi-metal blade broken or linkage out of
adjustment
Check bi-metal blade and linkage and
adjust, repair or replace as necessary.
Dirt on fuel solenoid valve lip Clean solenoid valve lip
425P/N 12261-683 REVISED: January 2015
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