23
TROUBLE SHOOTING (CONT’D)
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Pilot will not stay lit
1. Loose wiring on ignitor
wire to ignition module
and/or poor ground to
ignition module
2. Pilot flame too low to sense
3. Flame sensor defective
1. Check wiring connection.
Refer to wiring diagram (see
Wiring Diagram, page 20)
2. Clean and adjust pilot
burner and check gas supply
and inlet pressure to unit
Note: Have a qualified
technician replace pilot
assembly if broken or
corroded
3. Replace flame sensor
Frequent pilot outage
1. Pilot flame may be too low,
causing safety pilot to
“drop out”
2. Improper venting or
excessive blockage
1. Clean and adjust pilot flame
for maximum flame im-
pingement on flame probe
2. Have vent system inspected,
including termination cap.
Remove any restriction or
obstruction
Slight smoke or order during
initial operation
1. Residues from
manufacturing process
1. Problem will stop after a few
hours of operation
Pilot and Main Burner go out
while in operation
1. High Limit Switch is
defective of has reached
its maximum temperature
3. No L.P. in tank
1. Allow unit to cool. Then
repeat lighting instructions.
2. If above does not allow for
ignition, check high limit
switch. Place jumper lines
across high limit switch. If
you can re-ignite the pilot
your high limit switch is
defective. Replace high limit
switch before using
3. Check L.P. tank. You may be
out of fuel
