Troubleshooting Guide; Possible Cause(S) - Master MH-40-GFA Manuel De L'utilisateur Et Instructions D'utilisation

Problem
Fan does not turn when
electricity is connected.
Heater will not fire (ignite).
Heater stops running
by itself.
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NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR
WHILE CONNECTED TO A POWER SOURCE

TROUBLESHOOTING GUIDE

Possible Cause(s)

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.
1.
2. Check housing for damage. Be
3. Straighten all fan blades.
4. Replace motor assembly.
1.
2. Set plug gap to 0.16" (4 mm).
3. Replace spark plug
1.
2. Replace control valve.
3. Clean inside of heater.
10 Propane Forced Air Heater User's Manual
Solution
Check current at outlet. If voltage
is correct, inspect extension and
power cords for cuts, frays or
breaks
sure there are no dents in the
housing obstructing the fan.
Inspect module wire. Re-attach
or tighten if loose. Inspect spark
module and replace if necessary.
Inspect all other electrical
components.
(multi-bracket assembly).
If the heater input or output is
restricted, the inside temperature
can become too hot. Keep the
areas in front and behind heater
clear of obstructions.