Desa CGMFN Owner's Operation And Installation Manual

Contents

www.desatech.com 119315-01A6TRoUBlEshooTiNGContinuedObSERVED PRObLEMWhen ignitor button is pressed,there is spark at ODS/pilot butno ignitionODS/pilot lights but flame goes outwhen control knob is releasedBurner does not light after ODS/pilot is litPOSSIbLE CAUSE1. Gas supply turned off orequipment shutoff valveclosed2. Control knob not in PILOTposition3. Control knob not pressed inwhile in PILOT position4. Air in gas lines wheninstalled5. Depleted gas supply (pro-pane/LP only)6. ODS/pilot is clogged7. Gas regulator setting is notcorrect1. Control knob not fullypressed in2. Control knob not pressed inlong enough3. Safety interlock system hasbeen triggered4. Equipment shutoff valve notfully open5. Pilot flame not touchingthermocouple, which allowsthermocouple to cool, caus-ing pilot flame to go out. Thisproblem could be caused byone or both of the following:A) Low gas pressureB) Dirty or partially cloggedODS/pilot6. Thermocouple connectionloose at control valve7. Thermocouple damaged8. Control valve damaged1. Inlet gas pressure is too low2. Burner orifice is clogged3. Thermopile leads disconnectedor improperly connected (Re-mote-Ready Models Only)4. Burners will not come on inremote position (Remote-Ready Models Only)REMEDY1. 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. Contact local propane/LP gascompany6. Clean ODS/pilot (see Cleaningand Maintenance, page 24) orreplace ODS/pilot assembly7. Replace gas regulator1. Press in control knob fully2. After ODS/pilot lights, keep con-trol knob pressed in 30 seconds3. Wait one minute for safety in-terlock system to reset. Repeatignition operation4. Fully open equipment shutoffvalve5. A) Contact local natural orpropane/LP gas companyB) Clean ODS/pilot (seeCleaning and Maintenance,page 24) or replace ODS/pilotassembly6. Hand tighten until snug, thentighten 1/4 turn more7. Replace pilot assembly8. Replace control valve1. Contact local natural or pro-pane/LP gas company2. Clean burner (see Cleaningand Maintenance, page 24) orreplace burner orifice3. Reconnect leads (see WiringDiagram, page 29)4. Replace battery in hand-heldremote and receiver