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TROUBLESHOOTING CHART ( FOR QUALIFIED SERVICE TECHNICIAN ) - MAIN BURNER
SYMPTOM
POSSIBLE CAUSES
1. Gas input not checked.
Incorrect
Gas Input
2. Clogged orifice.
1. Appliance undersized.
Not
Enough
Heat
2. Temperature dial set too low.
(Bulb type valves).
3. Incorrect supply pressure.
Too Much
1. Temperature dial set too high.
Heat
2. Combination control
valve sticks open.
Burner
1. Pilot flame too large or too small.
Won't Turn
2. Dirt in pilot orifice.
On
3. Defective automatic pilot section in
combination control valve.
4. Defective pilot generator.
5. Defective combination control valve.
6. Manual reset blocked flue switch
tripped.
1017754-A
Please follow the following corrective actions in order.
1. Re-check gas input.
2. Check orifice for clogging. If clogged, clean out the hole carefully with a smooth wood
toothpick. (Do not in any way enlarge or distort it).
1. This is especially true when a dwelling or room is enlarged. Have the heat loss calculated and
compare to the appliance output (70% of input). Your gas company or installer can supply you
with this information. If appliance is undersized, replace with correct size unit.
2. Raise setting of Temperature Dial.
See "Lighting & Shutting Down Instructions" on page 13.
3. Check supply pressure as outlined above.
1. Lower setting of temperature dial.
See "Lighting & Shutting Down Instructions" on page 13.
2. Replace combination control valve.
1. Re-adjust pilot flame using adjustment on combination control valve.
2. Clean pilot orifice with air or solvent, do not ream.
3. Replace entire combination control valve.
4. Replace pilot generator.
5. Replace valve.
6. Reset switch, see Page 9 (Fig. 4-A) and blocked flue section below.
SERVICE RECORDS
CORRECTIVE ACTION
Page 22
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