1017480-A
Page 13
1. Pilot flame too large or too small.
2. Defective combination control valve.
1. Dirt in pilot orifice.
2. Pilot lighter door open.
3. Defective automatic pilot section in
combination control valve.
4. Defective pilot generator.
5. Vent safety shut off system.
1. Pilot flame too large or too small.
2. Defective pilot generator.
3. Defective gas valve.
4. Loose connections at spill switch or
ECO on gas valve.
Burner Won’t
Light
Pilot
Outage
Pilot Will
Not Stay Lit
When Control
Knob is
Released
1. Re-adjust pilot flame using adjustment on combination control valves
(See
Fig. H-1 & H-2 on page 8)
.
2. Replace valve.
1. Clean pilot orifice with air or solvent, do not ream.
2. Close pilot lighter door.
3. Replace combination control valve.
4. Replace pilot generator.
5. See the “Venting” section
(Pages 3-4)
.
1. Re-adjust pilot flame using adjustment on combination control valves (
See
Fig. H-1 & H-2 on page 8
).
2. Replace pilot generator.
3. Replace gas valve.
4. Tighten connections.
Too Much
Heat
TROUBLESHOOTING CHART -
AUTOMATIC PILOT & VALVE
1. Temperature dial set too high.
2. Combination control
valve sticks open.
1. Lower setting of temperature dial.
See “Lighting & Shutting Down
Instructions” on page 11.
2. Replace combination control valve.
1. Heater undersized.
2. Temperature dial set too low.
3. Incorrect gas supply pressure.
Not
Enough
Heat
1. This is especially true when a dwelling or room is enlarged. Have the heat
loss calculated and compare to the heater output (70% of input). Your
gas company or installer can supply you with this information. If heater is
undersized, replace with correct size unit.
2. Raise setting of temperature dial. See “Lighting & Shutting Down
Instructions.”
(See Page 11)
.
3. Check gas supply pressure and regulator pressure as outlined above.
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
TROUBLESHOOTING CHART -
POOR HEATING RESULTS
1. Gas input not checked.
2. Clogged orifice.
3. Pressure regulator.
4. Thermostat capillary tube damaged.
Incorrect
Gas Input
1. Re-check gas input. See “Gas Supply”.
2. Check orifices for clogging. If clogged, clean out the hole carefully with a
smooth wood toothpick.
(Do not in any way enlarge or distort it).
3. Regulator must be adjusted by a qualified serviceman using proper tools and
instruments.
4. Replace bulb control switch.
