Instructions / Assembly

ManualsBrandsWilliams ManualsGas Wall Heaters35,000 BTU Natural Gas Hearth Heater with Wall or Cabinet-Mounted Thermostat

Troubleshooting

SYMPTOM

POSSIBLE CAUSE

CORRECTIVE ACTION

5. Heater operates,

but will not shut off

after room

temperature is

attained.

A. Thermostat wiring

defective.

Thermostat lead wires may be shorted together, caused by a nail or staple.

Check by removing thermostat leads from valve terminals.

B. Thermostat location.

Check thermostat location. If on an outside wall, or there is a hole in the wall

behind thermostat, cold air may be coming in contact with the thermostat.

Relocate the thermostat or plug the hole.

C. Defective thermostat.

Verify thermostat temperature reading or replace.

D. Valve stuck open.

Replace valve.

6. Pilot outage.

A. Pilot flame may be

too low or blowing

(high), causing pilot

to drop out.

Adjust pilot flame. Pilot orifice may be plugged

(Check for spider webs or other material).

B. Drafts or drafty areas.

Check for doorway and high air movement areas.

7. Main burner will not

stay on.

A. Blockage in vent pipe.

Checks vent pipe for blockage, such as bird nests, twigs, leaves, etc.

B. Thermostat location.

Check thermostat location - if on an outside wall or there is a hole in wall

behind the thermostat causing cold air to contact the thermostat, relocate the

thermostat or plug the hole.

Check that the vent cap is properly installed, and not placed too far down on

the vent pipe. Cap must be the same manufacturer as the vent.

C. Restriction in vent

system caused by

offsets.

All type "B" vents shall extend in a vertical direction with no more than two

offsets not exceeding 45 degrees. Any angle greater than 45 degrees from

vertical is considered horizontal. Any offsets used should be as far above

the draft hood as possible to allow venting to begin before any restriction is

encountered. The use of too many offsets may also prevent proper venting.

D. Incorrect vent pipe.

Use listed B/W type vent pipe. DO NOT use transite or any other type of

ceramic pipe for venting. DO NOT use single wall pipe. When venting into a

masonry chimney, the chimney must be properly lined and sized for this gas

heater. The use of type "B" or flexible chimney liner is recommended.

E. Loose connections on

the vent safety wiring

harness.

Check the connection on both the switch and the gas valve. Tighten if

necessary.