Desa EFS33PRB Owner's Operation And Installation Manual

Also see for EFS33NRB: OWNER'S OPERATION AND INSTALLATION MANUAL

www.desatech.com 113132-01B24TROUBLESHOOTINGContinuedOBSERVED PROBLEMODS/pilot lights but flame goesout when control knob is re-leasedBurner does not light after ODS/pilot is litDelayed ignition of one or bothburnersB u r n e r b a c k f i r i n g d u ri n gcombustionSlight smoke or odor during initialoperationREMEDY1. Press in control knob fully2. After ODS/pilot lights, keep con-trol knob pressed in 30 seconds3. Fully open equipment shutoffvalve4. A) Contact local natural orpropane/LP gas companyB) Clean ODS/pilot (seeCleaning and Maintenance,page 21) or replace ODS/pilotassembly5. Hand tighten until snug, thentighten 1/4 turn more6. Replace pilot assembly7. Replace control valve1. Contact local natural or pro-pane/LP gas company2. Clean burner(s) (see Cleaningand Maintenance, page 21) orreplace burner orifice(s)3. Reconnect leads (see WiringDiagram, page 22)4. Replace battery in transmitterand receiver1. Contact local natural or pro-pane/LP gas company2. Clean burner(s) (see Cleaningand Maintenance, page 21) orreplace burner orifice(s)1. Clean burner (see Cleaningand Maintenance, page 21) orreplace burner orifice(s)2. Replace damaged burner3. Replace gas regulator1. Check burner for dirt anddebris. If found, clean burner(see Cleaning and Mainte-nance, page 21)2. Replace gas control3. Problem will stop after a fewhours of operationPOSSIBLE CAUSE1. Control knob not fullypressed in2. Control knob not pressed inlong 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 cloggedODS/pilot5. Thermocouple connectionloose at control valve6. Thermocouple damaged7. Control valve damaged1. Inlet gas pressure is too low2. Burner orifice(s) clogged3. Thermopile leads disconnectedor improperly connected4. Burner will not come on inremote position1. Manifold pressure is toolow2. Burner orifice(s) clogged1. Burner orifice is clogged ordamaged2. Damaged burner3. Gas regulator defective1. Not enough air2. Gas regulator defective3. Residues from manufacturingprocesses and logs curing