Desa SF20NT Safety Information And Installation Manual

Also see for LSF20NT: Safety information and installation manual Safety information and installation manual

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Desa SF20NT Safety Information And Installation Manual Manual pdf 16 page image

www.desatech.com 116307-01A16TROUBLESHOOTINGWARNING: 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 cleanODS/pilot. This can damage ODS/pilot unit.Note: All troubleshooting items are listed in order of operation.POSSIBLE CAUSE1. Ignitor electrode positionedwrong2. Ignitor electrode broken3. Ignitor electrode not con-nected to ignitor cable4. Ignitor cable pinched or wet5. Broken ignitor cable6. Bad piezo ignitor7. Piezo ignitor nut is loose(piezo ignition models only)8. Battery not installed, batterypower low or battery notinstalled correctly (electronicignition models only)1. Gas supply turned off or equip-ment shutoff valve closed2. Thermostat control knob notfully pressed in while pressingignitor button3. Air in gas lines when in-stalled4. Depleted gas supply (propane/LP gas)5. ODS/pilot is clogged6. Gas regulator setting is notcorrect7. Thermostat control knob is notin pilot positionREMEDY1. Replace pilot assembly2. Replace pilot assembly3. Reconnect ignitor cable4. Free ignitor cable if pinchedby any metal or tubing. Keepignitor cable dry5. Replace ignitor cable6. Replace piezo7. Tighten nut holding piezoignitor. Nut is located insideheater cabinet at top8. Install new alkaline batteryin electronic ignitor. Verifybattery is installed correctly1. Turn on gas supply or openequipment shutoff valve2. Turn to PILOT/IGN posi-tion. Fully press in thermostatcontrol knob while pressingignitor button3. Continue holding down con-trol knob. Repeat igniting op-eration until air is removed4. Contact local propane/LP gascompany5. Clean ODS/pilot (see Cleaningand Maintenance, page 15) orreplace ODS/pilot assembly6. Replace gas regulator7. Turn thermostat control knobto pilot positionOBSERVED PROBLEMWhen ignitor button is pressedin, there is no spark at ODS/pilotWhen ignitor button is pressedin, there is a spark at ODS/Pilotbut no ignition