Desa (V)VC42P, CGCDV42PR Owner's Operation And Installation Manual

www.desatech.com 116236-01E34OBSERVED PROBLEMPilot lights but flame goes outwhen control knob is releasedBurner does not light after pilotis litDelayed ignition burnerBurner backfiring during com-bustionSlight smoke or odor during initialoperationREMEDY1. Press in gas control knobfully2. After pilot lights, keep gascontrol knob pressed in 30seconds3. Fully open equipment shutoffvalve4. A) Contact local natural orpropane/LP gas companyB) Clean pilot (see Cleaningand Maintenance, page 31)or replace pilot assembly5. Hand tighten until snug, thentighten 1/4 turn more6. Replace pilot assembly7. Replace control valve1. Clean burner (see Cleaningand Maintenance, page 31) orreplace burner orifice2. Contact local propane/LP ornatural gas company3. Reconnect leads to TP &TPTH terminals on controlvalve4. Replace thermopile1. Contact local propane/LP ornatural gas company2. Clean burner (see Cleaningand Maintenance, page 31) orreplace burner orifice1. Clean burner (see Cleaningand Maintenance, page 31) orreplace burner orifice2. Replace damaged burner3. Replace gas control1. Problem will stop after a fewhours of operationTROUbLEShOOTINGContinuedPOSSIBLE CAUSE1. Gas control knob not fullypressed in2. Gas control knob not pressedin long enough3. Equipment shutoff valve notfully open4. 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 cloggedpilot5. Thermocouple connectionloose at control valve6. Thermocouple damaged7. Control valve damaged1. Burner orifice clogged2. Inlet gas pressure is too low3. Thermopile leads disconnect-ed or improperly connected4. Thermopile is defective1. Manifold pressure is too low2. Burner porting or orificeclogged1. Burner orifice is clogged ordamaged2. Damaged burner3. Gas regulator defective1. Residues from manufacturingprocesses and logs curing