www.desatech.com114668-01F 25TROUbLESHOOTINGWARNING: Turn off heater and let cool before servicing. Only aqualified 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 not con-nected to ignitor cable2. Ignitor cable pinched orwet3. Broken ignitor cable4. Bad ignitor5. Ignitor electrode positionedwrong6. Ignitor electrode broken7. Battery not installed, batterypower low or battery not in-stalled correctly (electronicignition models only)1. Gas supply turned off orequipment shutoff valveclosed2. Control knob not in PILOTposition3. Control knob not pressed inwhile in PILOT position4. Air in gas lines when in-stalled5. Depleted gas supply (pro-pane/LP only)6. ODS/pilot is clogged7. Gas regulator setting is notcorrectREMEDY1. Reconnect ignitor cable2. Free ignitor cable if pinchedby any metal or tubing.Keep ignitor cable dry3. Replace ignitor cable4. Replace ignitor5. Replace pilot assembly6. Replace pilot assembly7. Install new alkaline batteryin electronic ignitor. Verifybattery is installed cor-rectly1. Turn on gas supply or openequipment shutoff valve2. Turn control knob to PILOTposition3. Press in control knob whilein PILOT position4. Continue holding downcontrol knob. Repeat ignit-ing operation until air isremoved5. Contact local propane/LPgas company6. C l e a n O D S / p i l o t ( s e eCleaning and Maintenance,page 24) or replace ODS/pilot assembly7. Replace gas regulatorOBSERVED PROBLEMWhen ignitor button ispressed, there is no sparkat ODS/pilotWhen ignitor button ispressed, there is spark atODS/pilot but no ignition