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

1. Ignitor electrode positioned

1.

Replace pilot assembly

pressed in, there is no spark

 

wrong

 

 

at ODS/pilot

2. Ignitor electrode broken

2.

Replace pilot assembly

 

3.

Ignitor electrode not con-

3.

Reconnect ignitor cable

 

 

nected to ignitor cable

 

 

 

4.

Ignitor cable pinched or

4.

Free ignitor cable if pinched

 

 

wet

 

by any metal or tubing.

 

 

 

 

Keep ignitor cable dry

 

5.

Broken ignitor cable

5.

Replace ignitor cable

 

6.

Bad ignitor

6.

Replace ignitor

 

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 spark at ODS/Pilot but no ignition

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob is not in pilot position

3.Control knob not fully pressed in while pressing ignitor button

4.Air in gas lines when in- stalled

5.Depleted gas supply (pro- pane/LP gas)

6.ODS/pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to pilot position

3.Turn to PILOT/IGN position. Fully press in control knob while pressing ignitor button

4.Continue holding down control knob. Repeat ignit- ing operation until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see

Cleaning and Maintenance, page 21) or replace ODS/ pilot assembly

7.Replace gas regulator

Moisture/condensation no-

1. Not enough combustion/

1. Refer to Air for Combustion

ticed on windows

ventilation air

and Ventilation require-

 

 

ments (page 5)

22

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118621-01B

Page 22
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Desa NZ107 NZ116, NZ119, NZ118, NZ100, NZ105, NZ102, NZ101, NZ103 NZ104 Troubleshooting, Observed Problem Possible Cause Remedy

NZ103 NZ104, NZ119, NZ102, NZ100, NZ118 specifications

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