Desa SVYD18NRA/PRA SERIES Owner's Operation And Installation Manual

Also see for SVYD18NRA Series: OWNER'S OPERATION AND INSTALLATION MANUAL

Contents

www.desatech.com113084-01A 19TROUBLESHOOTINGNote: All troubleshooting items are listed in order of operation.WARNING: 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.POSSIBLE CAUSE1. Ignitor electrode not con-nected to ignitor cable2. Ignitor cable pinched or wet3. Broken ignitor cable4. Bad piezo ignitor5. Ignitor electrode broken6. Ignitor electrode positionedwrong1. Gas supply turned off or equip-ment shutoff valve closed2. Control knob not in PILOTposition3. Control knob not pressed inwhile in PILOT position4. Air in gas lines when installed5. ODS/pilot is clogged6. Gas regulator setting is notcorrect7. Depleted gas supply (propane/LP only)1. Control knob not fully pressed in2. Control knob not pressed inlong enough3. Equipment shutoff valve notfully open4. Pilot flame not touching ther-mocouple, which allows ther-mocouple to cool, causing pi-lot flame to go out. This prob-lem could be caused by one orboth of the following:A) Low gas pressureB) Dirty or partially cloggedODS/pilot5. Thermocouple connectionloose at control valve6. Thermocouple damaged7. Control valve damagedREMEDY1. Reconnect ignitor cable2. Free ignitor cable if pinchedby any metal or tubing. Keepignitor cable dry3. Replace ignitor cable4. Replace piezo ignitor5. Replace pilot assembly6. Replace pilot assembly1. Turn on gas supply or openequipment shutoff valve2. Turn control knob to PILOTposition3. Press in control knob while inPILOT position4. Continue holding down con-trol knob. Repeat igniting op-eration until air is removed5. Clean ODS/pilot (see Cleaningand Maintenance, page 18) orreplace ODS/pilot assembly6. Replace gas control7. Contact local propane/LP gascompany1. Press in control knob fully2. After ODS/pilot lights, keep con-trol knob pressed in 30 seconds3. Fully open equipment shutoffvalve4. A) Contact local propane/LPor natural gas companyB) Clean ODS/pilot (seeCleaning and Maintenance,page 18) or replace ODS/pi-lot assembly5. Hand tighten until snug, thentighten 1/4 turn more6. Replace pilot assembly7. Replace control valveOBSERVED PROBLEMWhen ignitor button is pressed,there is no spark at ODS/pilotWhen ignitor button is pressed,there is spark at ODS/pilot butno ignitionODS/pilot lights but flame goesout when control knob is re-leased