www.desatech.com56131H 33TROUbLESHOOTINGContinuedREMEDY1..Check.electrical.connections.and.replace.wall.switch1..Clean. and. adjust. main.burner...Adjust. ignitor. location. for.maximum. flame. impinge-ment.on.sensor3..Have. vent. inspected. for.blockage.or.damagePOSSIbLE CAUSE1..Wall.switch.wires.defective1. Burner flame is too low..Igniter.is.misaligned.causing.safety.burner.to."drop.out"3..Vent. may. be. blocked. or.restrictedObSERVED PRObLEMNo.gas.to.main.burner.when.wall.switch.and.valve.are.set.to.ON.positionFrequent main burner outageWIRING DIAGRAMSGNDJ. BOXRECEPTACLEGRNBLK WHTGRN(NOT SUPPLIED)INCOMING120V AC(FUSE BOXORBREAKER)FIELD WIREWHTBLKCONNECTORSVariableSpeedControlBlowerElectrical Rating:120v, 60Hz, 0.7ATRANSFORMERSTEP DOWN120V AC24V AC OFFWALL SWITCH(SUPPLIED)ONIGNITERASSEMBLYD V2GN L1 INDIGNITION CONTROLMODULETS S1 SW V1P.GNDJ. BOXRECEPTACLEOPTIONALCONTROLREMOTEGRNBLKWHTGRN(NOT SUPPLIED)INCOMING120V AC(FUSE BOXORBREAKER)FIELD WIREWHTBLKCONNECTORSE AIHLOIPTOL DO NOTCONNECTCONTROLVALVE TO120 VACGAS VALVEFigure 63 - Electronic Wiring DiagramFigure 64 - Optional Blower Wiring DiagramSERVICE HINTSWhen Gas Pressure Is Too Low•. pilot.will.not.stay.lit•. burner.will.have.delayed.ignition• fireplace will not produce specified heat•. propane/LP.gas.supply.may.be.lowYou.may.feel.your.gas.pressure.is.too.low..If.so, contact your local gas supplier.TECHNICAL SERVICEYou may have further questions about installa-tion, operation, or troubleshooting. If so, con-tact DESA Heating, LLC at 1-866-672-6040.When. calling. please. have. your. model. and.serial.numbers.of.your.heater.ready.You can also visit DESA Heating, LLC’s website.at.www.desatech.com.