TROUBLE-

SHOOTING

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

WARNING

Turn off and unplug heater and let cool before servicing. Unless you need gas supply for testing, shut off manual shutoff valve before servicing. Only a qualified service person should service and repair heater and venting system.

CAUTION

Never use a wire, needle, or similar object to clean pilot. This can damage pilot.

OBSERVED

POSSIBLE

 

 

PROBLEM

CAUSE

REMEDY

 

 

 

 

When ignitor button

1. Incorrect spark gap.

1.

Adjust spark gap to 1/16".

is pressed, there is no

2.

Ignitor electrode posi-

2.

Replace ignitor.

spark at pilot.

 

tioned wrong.

 

 

 

3.

Ignitor electrode broken.

3.

Replace ignitor.

 

4.

Ignitor electrode not con-

4.

Reconnect ignitor cable.

 

 

nected to ignitor cable.

 

 

 

5.

Ignitor cable pinched or

5.

Free ignitor cable if

 

 

wet.

 

pinched by any metal or

 

 

 

 

tubing. Keep ignitor

 

 

 

 

cable dry.

 

6.

Piezo ignitor nut is loose.

6.

Tighten nut holding piezo

 

 

 

 

ignitor to heater cabinet.

 

 

 

 

Nut is located inside

 

 

 

 

heater cabinet at top.

 

7.

Broken or frayed ignitor

7.

Replace ignitor cable.

 

 

cable.

 

 

 

8.

Loose ignitor cable.

8.

Reconnect ignitor cable.

 

9.

Bad piezo ignitor.

9.

Replace piezo ignitor.

24

When ignitor button is pressed, there is spark at pilot but no ignition.

1.Gas supply turned off or manual shutoff valve closed.

2.Control knob not in PILOT position.

3.Control knob not pressed in while in PILOT position.

4.Air in gas lines when installed.

5.Pilot is clogged.

6.Gas regulator setting is not correct.

1.Turn on gas supply or open manual shutoff valve.

2.Turn control knob to PILOT position.

3.Press in control knob while in PILOT position.

4.Continue holding down control knob. Repeat igniting operation until air is removed.

5.Clean pilot (see Clean- ing and Maintenance,

page 23) or replace pilot assembly.

6.Replace control valve.

100749

Page 24
Image 24
Desa GVC50NA, GVC35NA, GVC65NA installation manual Trouble Shooting, Observed Possible Problem Cause Remedy

GVC35NA, GVC50NA, GVC65NA specifications

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