www.desatech.com113195-01C POSSIBLE CAUSE1. Not enough air2. Gas regulator defective3. Residues from manufacturingprocesses and logs curing1. Not enough combustion/ven-tilation air1. Turning control knob to HIposition when burner is cold2. Air in gas line3. Air passageways on heaterblocked4. Dirty or partially cloggedburner orifice1. When heated, vapors fromfurniture polish, wax, carpetcleaners, etc. may turn intowhite powder residue1. Battery is not installed. Bat-tery power is low1. Metal expanding while heatingor contracting while coolingREMEDY1. Check burner for dirt anddebris. If found, clean burner(see Cleaning and Mainte-nance, page 23)2. Replace gas control3. Problem will stop after a fewhours of operation1. Refer to Air for Combustionand Ventilation requirements(page 6)1. Turn control knob to LOposition and let warm up fora minute2. Operate burner until air isremoved from line. Have gasline checked by local naturalor propane/LP gas company3. Observe minimum installationclearances (see page 11)4. Clean burner (see Cleaningand Maintenance, page 23)or replace burner orifice1. Turn heater off when usingfurniture polish, wax, cleanersor similar products1. Replace 9-volt batteries inreceiver and hand-held remotecontrol1. This is normal with mostfireplaces. If noise is exces-sive, contact qualified servicepersonOBSERVED PROBLEMSlight smoke or odor duringinitial operationMoisture/condensation noticedon windowsHeater produces a whistlingnoise when burner is litWhite powder residue formingwithin burner box or on adjacentwalls or furnitureRemote does not function(GHRCB and GHRCTB Seriesonly)Fireplace insert produces aclicking/ticking noise just afterburners are lit or shut offTROUBlEShOOTiNGContinued