Operator`s manual
23
troubleshooting
Problem Possible Case Solution
Fan does not turn
when electricity is
connected
1. No electric power to
heater.
2. Blades of fan in contact
with heater housing.
3. Fan blades bent.
4. Fan motor defective.
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.
Heater will not fire
(ignite)
1. No spark at module.
2. Incorrect spark gap.
3. Corroded electrode.
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).
Heater stops
running by itself
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.
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.
Troubleshooting
TROUBLESHOOTING CHART










