Troubleshooting - Desa Comfort Glow CGR35NA Owner's Operation And Installation Manual

TROUBLE-
SHOOTING
Note: All troubleshooting
items are listed in order of
operation.
100792
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.
Never use a wire, needle, or similar object to clean pilot.
This can damage pilot.
OBSERVED POSSIBLE
PROBLEM CAUSE
When ignitor button 1. Incorrect spark gap.
is pressed, there is no 2. Ignitor electrode posi-
spark at pilot.
3. Ignitor electrode broken.
4. Ignitor electrode not con-
5. Ignitor cable pinched or
6. Piezo ignitor nut is loose.
7. Broken or frayed ignitor
8. Loose ignitor cable.
9. Bad piezo ignitor.
When ignitor button 1. Gas supply turned off or
is pressed, there is
spark at pilot but no
ignition. 2. Control knob not in
3. Control knob not
4. Air in gas lines when
5. Pilot is clogged.
6. Gas regulator setting is
WARNING
WARNING ICON G 001
CAUTION
WARNING ICON G 001
tioned wrong.
nected to ignitor cable.
wet.
cable.
manual shutoff valve
closed.
PILOT position.
pressed in while in
PILOT position.
installed.
not correct.
REMEDY
1. Adjust spark gap to 1/16".
2. Replace ignitor.
3. Replace ignitor.
4. Reconnect ignitor cable.
5. Free ignitor cable if
pinched by any metal or
tubing. Keep ignitor
cable dry.
6. Tighten nut holding piezo
ignitor to heater cabinet.
Nut is located inside
heater cabinet at top.
7. Replace ignitor cable.
8. Reconnect ignitor cable.
9. Replace piezo ignitor.
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 Maintenanc,
page 26) or replace pilot
assembly.
6. Replace control valve.
Continued
27