United States Stove C9740N, G9740L manual Troubleshooting, Observed Problem, Possible Cause, Remedy

Models: C9740L A9740L G9740N A9740N C9740N G9740L

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TROUBLESHOOTING

TROUBLESHOOTING

WARNING

Turn off and let cool before servicing. Only a qualified service person should service and repair heater.

NOTE: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM

POSSIBLE CAUSE

 

REMEDY

 

Ignitor electrode positioned wrong

Replace

ignitor.

 

Ignitor electrode is broken

Replace

ignitor.

 

Ignitor electrode not connected to ignitor

Reconnect ignitor cable.

 

cable.

 

 

When ignitor button is pressed, there is no

Ignitor cable pinched or wet keep ignitor

Free ignitor cable if pinched by any metal

spark at ODS/Pilot.

cable dry.

or tubing.

 

 

Broken ignitor cable

Replace ignitor cable.

 

Bad piezo ignitor

Replace piezo ignitor.

 

 

 

 

Appliance burning vapors from paint, hair

Ventilate room. Stop using odor-causing

Appliance produces unwanted odors.

spray, glues, etc.

products while heater is running.

 

Gas leak.

Locate and correct all leaks.

 

 

 

 

Not enough fresh air is available for ODS/

Open window and/or door ventilation

Appliance shuts off in use.

Pilot to operate.

 

 

 

 

 

 

Low line pressure.

Contact local gas company.

 

 

 

Gas odor even when control knob is in

ODS/Pilot is partially clogged.

Clean ODS/Pilot.

OFF position.

Gas leak.

Locate and correct all leaks.

 

 

 

 

 

Control valve defective. Gas supply turned

Replace control valve.

 

off or manual shutoff valve closed.

Turn on gas supply or open manual shutoff

 

 

valve.

 

When ignitor button is pressed, there is

Control knob not in PILOT position.

Turn control knob while in PILOT position.

spark at ODS/Pilot, but no ignition.

Control knob not pressed in while in Pilot

Press in control knob while in PILOT posi-

 

 

position

tion.

 

 

Air in gas lines when installed.

Continue holding down control knob. Re-

 

 

peat igniting operation until air is removed

 

ODS/Pilot is clogged.

Replace ODS/pilot assembly or get is

 

 

serviced

 

 

 

 

ODS/Pilot lights, but flame goes out when

Gas regulator setting is not correct.

Replace gas regulator.

Control knob not fully pressed in.

Press in control knob fully.

control knob is released.

 

 

 

 

Control knob not pressed in long enough.

After ODS/pilot lights, keep control knob

 

 

pressed in 30 seconds.

 

Manual shutoff valve not fully open.

Fully open manual shutoff valve.

 

 

 

 

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United States Stove C9740N, G9740L, A9740N, G9740N, A9740L, C9740L Troubleshooting, Observed Problem, Possible Cause, Remedy