Troubleshooting - Desa CDR3924NT Owner's Operation And Installation Manual

WARNING: Turn off heater and let cool before servicing. 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
When ignitor button is
pressed, there is no spark at
ODS/pilot
When ignitor button is pressed,
there is spark at ODS/pilot but
no ignition
20

TROUbLESHOOTING

pOSSIBLE CAUSE
1. Ignitor electrode not con-
nected to ignitor cable
2. Ignitor cable pinched or
wet
3. Broken ignitor cable
4. Bad ignitor
5. Ignitor electrode positioned
wrong
6. Ignitor electrode broken
7. Battery not installed, bat-
tery power low or battery
not installed correctly
1. Gas supply turned off or
equipment 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 in-
stalled
5. Depleted gas supply (pro-
pane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
www.desatech.com
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing.
Keep ignitor cable dry
3. Replace ignitor cable
4. Replace ignitor
5. Replace pilot assembly
6. Replace pilot assembly
7. Install new alkaline battery
in electronic ignitor. Verify
battery is installed correctly
1. Turn on gas supply or open
equipment 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 ignit-
ing operation until air is
removed
5. Contact local propane/LP
gas company
6. Clean ODS/pilot (see
Cleaning and Mainte-
nance, page 18) or replace
ODS/pilot assembly
7. Replace gas regulator
122270-01D