Coleman DGAT070BDD Flashes once
Posted 24 October 2012 - 10:32 PM
Posted 25 October 2012 - 04:29 AM
My last bullet has the board's name on it. Getting a bad one off the shelf is rare but it does happen.
You wouldn't happen to be anywhere near Canandaigua, New York, would you?
Edited by jb8103, 25 October 2012 - 04:42 AM.
Posted 25 October 2012 - 07:56 AM
Was doing almost the exact same thing you describe here except not getting the longer run times, just shutting down after the 6 second flame sense period.
Ended up be the control module, I would almost be willing to bet that is your problem also.
Attached is a PDF document about FLAME RECTIFICATION for furnaces and how to measure with specs for Fenwall module, (the only one with a high 5 microamp current required), and some Johnson Controls and White-Rodgers modules.
Edited by Budget Appliance Repair, 25 October 2012 - 08:01 AM.
Willie's Budget Appliance Repair
Eureka, CA 95501
Posted 25 October 2012 - 05:39 PM
Bears looking in to, thanks, Willie!
Edited by jb8103, 25 October 2012 - 05:59 PM.
Posted 25 October 2012 - 09:28 PM
p.s. a lot of boards only need 1 microamp
Edited by Bullstok, 25 October 2012 - 09:50 PM.
Posted 27 October 2012 - 08:33 PM
Posted 28 October 2012 - 08:46 AM
Posted 28 October 2012 - 06:46 PM
Don't worry about the manifold pressure if your flame characteristics are good. Which they are.
That's all I have, hyprdrvr. Bon chance, and if you do get to the bottom of this, post back, won't you?
P.S. Use that borrowed Fluke meter to check this, you need a true RMS meter.
Edited by jb8103, 28 October 2012 - 07:23 PM.
Posted 28 October 2012 - 08:07 PM
Don't have the fluke on hand. Bought a Klein MM200 to replcae the GB meter that was not reading amps correctly. Should have bought the MM2000 but did not think I would need true RMS or Low Impedance. Anyway, It's reading 0.074 VAC and 0.5 mVDC between house ground and neutral on control board.
Posted 13 November 2012 - 11:10 AM
flame sense values above 1.5 UA are usually enough to keep the control happy. I'd try to check burner ground as well, right where the flame would complete the circuit t ground from the flame sensor.
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