TROUBLESHOOTING

19

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

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

WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice 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.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

When ignitor button is pressed in, there is no

1.

Ignitor electrode positioned wrong

1.

Replace pilot assembly

spark at ODS/pilot

2.

Ignitor electrode broken

2.

Replace pilot assembly

 

3.

Ignitor electrode not connected to igni-

3.

Reconnect ignitor cable

 

 

tor cable

 

 

 

4.

Ignitor cable pinched or wet

4.

Free ignitor cable if pinched by any

 

 

 

 

metal or tubing. Keep ignitor cable dry

 

5.

Broken ignitor cable

5.

Replace ignitor cable

 

6.

Bad piezo ignitor

6.

Replace piezo

 

7.

Piezo ignitor nut is loose

7.

Tighten nut holding piezo ignitor. Nut

 

 

 

 

is located inside heater cabinet at top

 

 

 

 

 

When ignitor button is pressed in, there is a

1.

Gas supply turned off or equipment

1.

Turn on gas supply or open equipment

spark at ODS/Pilot but no ignition

 

shutoff valve closed

 

shutoff valve

 

2.

Control knob not fully pressed in while

2.

Turn to PILOT/IGN position. Fully press

 

 

pressing ignitor button (non-thermostat

 

in control knob while pressing ignitor

 

 

models only)

 

button (non-thermostat models only)

 

 

Thermostat control knob not fully

 

Fully press in thermostat control knob

 

 

pressed in while pressing ignitor button

 

while pressing ignitor button (thermo-

 

 

(thermostat models only)

 

stat models only)

 

3.

Air in gas lines when installed

3.

Continue holding down control knob. Re-

 

 

 

 

peat igniting operation until air is removed

 

4.

Depleted gas supply (propane/LP gas)

4.

Contact local propane/LP gas company

 

5.

ODS/pilot is clogged

5.

Clean ODS/pilot (see Cleaning and

 

 

 

 

Maintenance, page 17) or replace ODS/

 

 

 

 

pilot assembly

 

6.

Gas regulator setting is not correct

6.

Replace gas regulator

 

7.

Thermostat control knob is not in pilot

7.

Turn thermostat control knob to pilot

 

 

position (thermostat models only)

 

position

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Vanguard Heating VN18IT, VP26T, VP16T, VN30T, VP22IT, VN18T, VP16IT Troubleshooting, Observed Problem Possible Cause Remedy

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