Troubleshooting

WARNING:Turnoffandunplugheaterandletcoolbeforeservicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit.

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

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

When ignitor button is pressed

1. Ignitor electrode positioned

1.

Replace pilot assembly

in, there is no spark at ODS/

 

wrong

2.

Replace pilot assembly

pilot

2. Ignitor electrode broken

 

3.

Ignitor electrode not con-

3.

Reconnect ignitor cable

 

4.

nected to ignitor cable

4.

Free ignitor cable if pinched

 

Ignitor cable pinched or wet

 

 

 

 

by any metal or tubing. Keep

 

5.

Broken ignitor cable

5.

ignitor cable dry

 

Replace ignitor cable

 

6.

Bad piezo ignitor

6.

Replace piezo

 

7.

Piezo ignitor nut is loose

7.

Tighten nut holding piezo

 

 

(piezo ignition models only)

 

ignitor. Nut is located inside

 

8.

Battery not installed, battery

8.

heater cabinet at top

 

Install new alkaline battery

 

 

power low or battery not

 

in electronic ignitor. Verify

 

 

installed correctly (electronic

 

battery is installed correctly

 

 

ignition models only)

 

 

 

 

 

 

 

 

When ignitor button is pressed

1. Gas supply turned off or equip-

1.

Turn on gas supply or open

in, there is a spark at ODS/Pilot

 

ment shutoff valve closed

2.

equipment shutoff valve

but no ignition

2. Thermostat control knob not

Turn to PILOT/IGN posi-

 

 

fully pressed in while pressing

 

tion. Fully press in thermostat

 

 

ignitor button

 

control knob while pressing

 

3.

Air in gas lines when in-

3.

ignitor button

 

Continue holding down con-

 

 

stalled

 

trol knob. Repeat igniting op-

 

4.

Depleted gas supply (propane/

4.

eration until air is removed

 

Contact local propane/LP gas

 

5.

LP gas)

5.

company

 

ODS/pilot is clogged

Clean ODS/pilot (see Cleaning

 

 

 

 

and Maintenance, page 15) or

 

6.

Gas regulator setting is not

6.

replace ODS/pilot assembly

 

Replace gas regulator

 

7.

correct

7.

Turn thermostat control knob

 

Thermostat control knob is not

 

 

in pilot position

 

to pilot position

16

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Desa LSFG20NT, VSF30PT installation manual Troubleshooting, Observed Problem Possible Cause Remedy

VSF30PT, LSFG20NT specifications

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