Desa (V)T32N series Owner's Operation And Installation Manual

Also see for CHDV32NR: OWNER'S OPERATION AND INSTALLATION MANUAL OWNER'S OPERATION AND INSTALLATION MANUAL OWNER'S OPERATION AND INSTALLATION MANUAL

Contents

www.desatech.com 111986-01F34OBSERVED PROBLEMPilot lights but flame goesout when control knob isreleasedBurner does not light afterpilot is litDelayed ignition burnerBurner backfiring during com-bustionSlight smoke or odor duringinitial operationPOSSIBLE CAUSE1. Gas control knob not fullypressed in2. Ga s c o n tr o l k n o b n o tpressed in long enough3. Equipment shutoff valve notfully open4. Pilot flame not touchingthermocouple, which al-lows thermocouple to cool,causing pilot flame to goout. This problem could becaused by one or both ofthe 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 toolow3. Thermopile leads discon-nected or improperly con-nected4. Thermopile is defective1. Manifold pressure is toolow2. Burner porting or orificeclogged1. Burner orifice is clogged ordamaged2. Damaged burner3. Gas regulator defective1. Residues from manufac-turing processes and logscuringREMEDY1. Press in gas control knobfully2. After pilot lights, keep gascontrol knob pressed in 30seconds3. Fully open equipment shut-off valve4. 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)or replace burner orifice2. Contact local propane/LP ornatural gas company3. Reconnect leads4. Replace thermopile1. Contact local propane/LP ornatural gas company2. Clean burner (see Cleaningand Maintenance, page 31)or replace burner orifice1. Clean burner (see Cleaningand Maintenance, page 31)or replace burner orifice2. Replace damaged burner3. Replace gas control1. Problem will stop after a fewhours of operationTROUbLESHOOTINGContinued