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TROUBLESHOOTING
Note: Before troubleshooting the system, make sure the gas shutoff valve is ON. The two
most common causes of a malfunctioning gas appliance are:
1. Loose wiring connections
2. Construction debris clogging the pilot and/or gas control valve lter
OBSERVED PROBLEM
Ignitor will not spark or pilot
will not light
Pilot will not stay lit
POSSIBLE CAUSE
1. No gas supply, or shutoff
valve is OFF
2. Air in gas line
3. Construction debris clog-
ging pilot orice
4. Low gas pressure
5. Kinked pilot line
6. Control valve knob is not
opening
7. No power to unit or the
ignition module or power
transformer is bad
8. Vent damper not fully
open
1. Loose wiring on thermopile
to regulator valve. No mil-
livolt current is being sent
back to regulator
2. If valve knob and wall
switch are in the ON posi-
tion, probable defective
regulator valve
3. Vent damper not fully
open
REMEDY
1. Check to see if you have
gas supply and that equip-
ment shutoff valve is
opened
2. Repeat lighting procedure
several times to purge all
air out of lines. If after re-
peated attempts appliance
does not light, call for quali-
ed service and repair.
3. Remove debris and dirt,
inspect and clean any other
possible obstructions
4. Contact your gas supplier
to check pressure
5. Have a qualied technician
replace pilot line
6. Replace control valve (Re-
fer to Replacement Parts,
page 20)
7. Check that main power is
on and that all wire connec-
tions are made correctly to
ignition model (see Wiring
Diagram, page 21). Check
for 24 VAC at secondary
side of transformer. If 24
VAC is present, and mod-
ule does not operate, have
module replaced, otherwise
have transformer replaced
8. Open vent damper until
fully locked in the OPEN
position
1. Check wiring connections.
Refer to wiring diagram
shown in Wall Switch In-
stallation, page 11
2. Have a qualied technician
replace valve
3. Open vent damper until
fully locked in the OPEN
position