www.desatech.com
110399-01J
28
AUTO
OFF
ON
Thermopile
TROUBLESHOOTING
WARNING: Turn off and unplug 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.
POSSIBLE CAUSE
1. Ignitor electrode not con-
nected to ignitor cable
2. Ignitor cable pinched or
wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode posi-
tioned wrong
7. Ignitor electrode broken
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
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
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
3. Tighten nut holding piezo ignitor
to base panel of log set. Nut is
located behind base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
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 igniting opera-
tion until air is removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see
Cleaning
and Maintenance
, page 27) or
replace ODS/pilot assembly
7. Replace gas regulator
WIRING DIAGRAM
(Remote-Ready Models Only)
