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Question About Coleman Furnace dgat090bdd
getting heat...

Model # DGAT090BDD Serial # 951060187 glow plug barely lights, goes out emidiately, and won't allow gas valve to open for ignition. Board, transformer, and enducer motor have all ready been replaced. If you could help as soon as possible would be appriciated, as customer needs heat. Thank You, Three Brother's Heating & Cooling Janet jarvissonsinc@att.net 219) 992-9579

Asked by Three Brothers Heating & Cooli on 11/07/2008 3  Answers

ManualsOnline posted an answer 15 years, 11 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Richard posted an answer 15 years, 8 months ago

3 Model # DGAT090BDD Colman Evcon 90,000 btu, propane in a 12 year old double wide. LED on controller blinks fast. Has done this periodically for years, I would reset the main power & it would fire up. Today, it didn't fire up and the LED blinks fast also. There are trouble codes (blinks) 1 thru 8 but this one blinks continuously fast. Any Ideas?
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Jerry posted an answer 15 years, 8 months ago

0 has the glow plug been replaced. Sometimes glow plugs will not work properly even though no cracks are visble. unplug glowplug and check to see if voltage is dropping off.
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Richard posted an answer 15 years, 8 months ago

0 Thanks you so much for offering to help me. I put a volt meter across the glow plug (is that also caller igniter?) turned on the power. No voltage was read. Just the fast blinking LED. When I unplug the plug called P1 and turn on the power the fan starts and I get a "Limit Cycling" code (4 blinks). I pluged P1 back in and 1 by 1 unpluged each component served by P1. When the Over temp wires are removed, the fan runs for 1 second then I get Code 4. With the Over temp & ground together removed the fan starts & continues to run and I still get code 4. Does it sound like the controller is bad? Can you repair individual components or do I need to replace the $200 board? Picture of board attached.
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