®
INFRARED PROPANE/LP GAS HEATER
TROUBLESHOOTING
Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.
Note: All troubleshooting items are listed in order of operation.
WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice 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.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY |
When ignitor button is pressed in, there is no spark at ODS/pilot
1.Ignitor electrode positioned wrong
2.Ignitor electrode broken
3.Ignitor electrode not connected to igni- tor cable
4.Ignitor cable pinched or wet
5.Broken ignitor cable
6.Bad piezo ignitor
7.Piezo ignitor nut is loose
1.Replace ignitor
2.Replace ignitor
3.Reconnect ignitor cable
4.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry
5.Replace ignitor cable
6.Replace control valve (piezo is part of control valve)
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 not fully pressed in while pressing ignitor button
Thermostat control knob not fully pressed in while pressing ignitor button (thermostat models only)
3.Air in gas lines when installed
4.Depleted gas supply
5.ODS/pilot is clogged
6.Gas regulator setting is not correct
7.Thermostat control knob is not in pilot position (thermostat models only)
1.Turn on gas supply or open equipment shutoff valve
2.Turn to PILOT/IGN position. Fully press in cotrol knob while pressing ignitor button
Fully press in thermostat control knob while pressing ignitor button (thermo- stat models only)
3.Continue holding down control knob. Re- peat igniting operation until air is removed
4.Contact local propane/LP gas company
5.Clean ODS/pilot (see Cleaning and Maintenance, page 13) or replace ODS/ pilot assembly
6.Replace gas regulator
7.Turn thermostat control knob to pilot position
www.desatech.com
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