1018028-BPage 17
SYMPTOM POSSIBLE CAUSES
TROUBLESHOOTING CHART ) - MAIN BURNER
1. Gas leak.
2. Thermostat not set high enough to
call for heat.
defective.
Gas Odor
Failure
to Ignite
CORRECTIVE ACTION
Flame Too
Large
1. Defective operator section of valve.
3. If installed above 2,000 feet.
Fig. 10 on page 12).
1. Clogged burner ports.
2. Obstructions around vent cap.
Yellow Burner
Flame
2. Make sure area around vent cap is clear, be sure vent system is sealed.
1. See page 1.
2. Burner ports clogged at pilot.
burners come on.
Delayed
Ignition
2. Clean burner ports (do not enlarge).
3. Check gas supply pressure.
4. Supply piping is too small. Consult local gas company or competent installer.
1. Open all manual gas valves.
2. Set thermostat to higher temperature.
replace thermostat.
1. Defective or damaged
2. Thermostat location.
3. Defective or sticking valve.
4. Excessive gas pressure.
Burner Won’t
Turn O
or thermostat.
4. Contact utility supplying gas.
1. Weak thermocouple.
2. Input too high.
3. Cover around pilot lighter
hole not air tight.
4. Vent tubes not properly
installed or sealed.
Pilot and
Main Burner
go out During
Normal
Operation
2. Check input rate.
gaskets are in place and properly sealed. Use only tubes and vent cap supplied. Do not
alter vent tubes or cap.
1. Gas input not checked.
1. Thermostat set too high.
2. Combination control valve stuck
open.
Incorrect
Gas Input
Too Much
Heat
Please follow the following corrective actions in order.
1. Furnace undersized.
3. Incorrect supply pressure.
Not Enough
Heat
3. Check supply pressure.
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