Stanley ST-40-GFA-E Manuel D'instructions page 7

Problem
Fan does not turn when electricity is
connected.
Heater will not fire (ignite).
Heater stops running by itself.
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TROUBLESHOOTING GUIDE
Possible Cause
1. No electric power to heater.
2. Blades of fan in contact with heater
housing.
3. Fan blades bent.
4. Fan motor defective.
1. No spark at module.
2. Incorrect spark gap.
3. Corroded electrode.
1. Temperature inside heater is too
high, causing thermal switch to shut
down operation.
2. Damaged control valve.
3. Dust or debris accumulated in
heater.
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Design are all trademarks of Stanley Black & Decker, Inc. or an affiliate thereof.
1. Check current at outlet. If voltage
is correct, inspect extension and
power cords for cuts, frays or
breaks.
2. Check housing for damage. Be sure
there are no dents in the housing
obstructing the fan.
3. Straighten all fan blades.
4. Replace Motor Assembly.
1. Inspect module wire. Re-attach,
or tighten if loose. Inspect Spark
module, and replace if necessary.
Inspect all other electrical
components.
2. Set plug gap to 0.16" (4mm).
3. Replace spark plug
(Multi-Bracket Assembly).
1. If heater input or output is restricted,
the inside temperature can become
too hot. Keep the areas in front and
behind heater clear of obstructions.
2. Replace control valve
(Valve Assembly).
3. Clean inside of heater.
6
Solution