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TROUBLESHOOTING
1. Lit match goes out as it enters lighter port.
a. Certain wind conditions will blow out match. Ignite
match, and as it flares, thrust match through opening.
b. Open nearby door or window and relight pilot.
2. Pilot flames but goes out when knob is released.
a. See Lighting Instructions. Relight Pilot.
b. Relight the pilot and hold knob down longer and harder.
Close lighter hole cover just after igniting. Check for a
good pilot flame.
c. Defective thermopile or defective magnet in safety section
of valve. Replace.
3. Yellow pilot flame.
a. Obstruction at pilot orifice.
b. Clean and properly size orifice.
4. Pilot and main burner go out during normal operation.
a. Check millivolts.
b. Check for proper size of pilot flame.
c. Check for defective or weak thermopile.
d. Check input, reduce as needed.
e. Cover on pilot lighter hole must be air tight.
f. Check for tight fit of air and flue tubes at both ends of vent
assembly. No obstruction around vent that would prevent
the wind from hitting all of the vent equally.
MAINTENANCE INSTRUCTIONS
Installation, repair and maintenance should be done by a
QUALIFIED SERVICE PERSON.
Steps in Removing Main Burner, Orifice and Valve
1. Disconnect the thermopile and pilot supply line at the pilot
burner.
2. Remove the burner compartment cover 5/16in (7.9mm) socket
suggested.
3. Remove screw holding left side of burner and lift out.
4. Main burner orifice is now accessible. Use 1/2in (12.7mm) box
end wrench to remove and apply non-hardening pipe dope
sparingly to orifice threads when replaced.
5. To remove the entire gas valve the nut holding the orifice fitting
to the chamber must be removed and the gas supply to the
valve disconnected. After this, the valve and orifice elbow can
be removed as a unit.
Cleaning The Pilot Burner
Cleaning of the pilot may be an annual necessity due to spiders.
After removing the supply tubing and orifice, use a pipe cleaner or
wire to clean the entire internal part of the pilot.
Cleaning the Combustion Chamber and Main Burner
When the main burner and vent cap are removed, all internal areas of
the combustion chamber are accessible for cleaning with a vacuum
hose. The main burner may be cleaned by forcing water into the
ports and the throat of the burner. The burner should be blown dry
or heated to dry all water out before reinstalling.
System Check
A millivolt meter is required to check the system. The millivolt read-
ings should be:
• Across the thermopile terminals, 400-450 millivolts with ther-
mostat OFF.
• Across the thermopile terminals, 150-250 millivolts with ther-
mostat ON.
•
Across the thermostat wires at the valve, less than 30 millivolts
with thermostat ON.
•
Across the thermostat wires at the thermostat, less than 5 mil-
livolts with thermostat ON. (Strong winds, dirty pilot and low
pressure will reduce readings.)
IMPORTANT:
The appliance’s venting system should be inspect-
ed at least once a year and immediately cleaned if necessary.
5. Thermostat does not turn the main burner on.
a. Check wiring.
b. Check all millivolt readings.
c. Check for spider in main burner orifice.
6. Yellow main burner flame soot on the vent cap.
a. Remove main burner to check for obstructions in throat,
ports and orifices.
b. Install new main burner orifice and pilot orifice. Refer to
Parts List.
