1018454-D
Page 31
Please follow the following corrective actions in order.
TROUBLESHOOTING CHART ( FOR QUALIFIED SERVICE TECHNICIAN )
MAIN BURNER
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Pilot flame too large or too small.
2. Dirt in pilot orifice.
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.
Burner
Won’t Turn
On
Condensation
of Water Vapor
1. Improper venting.
1. See “Venting” on
page 7
.
1. Defective or the automatic valve
is sticking.
2. Excessive gas pressure
3. Control module is defective
Burner Won’t
Turn Off
1. Clean or replace valve.
2. To correct this situation contact the utility supplying the gas.
See page 5 for gas pressure.
3. Replace the control module. Refer to the parts list.
1. Gas input not checked.
2. Clogged orifice.
Incorrect
Gas Input
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. Appliance undersized.
2. Temperature dial set too low.
(Bulb type valves).
3. Incorrect 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 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 23.
3.
See page 5
for gas pressure.
1. Check or clean the pilot orifice.
See page 5 for gas pressure.
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 8
(Fig. 4-A).
1. Temperature dial set too high.
2. Combination control
valve sticks open.
Too Much
Heat
1. Lower setting of temperature dial.
See “Lighting & Shutting Down Instructions” on page 23.
2. Replace combination control valve.
1. Main gas off.
2. Defective gas valve.
3. Defective pilot assembly.
4. Battery is low.
5. Control module is defective.
6. Manual reset blocked
flue switch tripped.
7. Tubing hasn't filled with
enough gas to light the pilot.
(This issue can occur if the furnace
has not been used recently).
Failure to
Ignite
1. Open all manual gas valves.
2. Replace gas valve.
3. Inspect pilot assembly for loose or broken components or wires. Replace. Refer to parts list.
4. Turn thermostat off and replace batteries.
5. Replace the control module. Refer to the parts list.
6. Reset switch,
see Page 7
.
7. Refill the line with gas.
Initial startup of the Pilot Pro system may take several minutes due
to air in the gas line. The ignition control module will time out after 1 minute of sparking.
See step 2 on page 20
.
