Jump to content
Click here to check out this guide

FAQs | Repair Videos | Academy | Newsletter | Contact


DISCLOSURE: We may earn a commission when you use one of our coupons/links to make a purchase.
  • Upcoming Events

    • 30 March 2024 02:00 PM Until 03:00 PM
      0  
      All Appliantology tech members are invited to join in this workshop on all things Appliantological: bidness, customers, tools, troubleshooting, flavorite brewski, whatever. Webcams and microphones are open and live!
      This workshop is also a great time for any students at Master Samurai Tech to bring any and all questions about the coursework. We're happy to walk through any concepts you're having trouble with. Think of it like office hours with your teachers. 
      If you have a specific appliance problem you'd like us to talk about, post it here! We need a problem statement and a PDF of the tech sheet or schematic so we can all see it on screen share. If you have a PDF that isn't already in the File library here at Appliantology, send it to us by attaching it to the contact form. 
      Also, follow this Calendar Event so you'll get notified of new posts here. Look for the "Follow" button either at the top of the topic on desktop or below the topic on mobile.
      Who: This workshop is only available to tech members at Appliantology.
      When: Saturday, March 30 @10:00 AM Eastern Time.
      Where: Online via Zoom
      How:
      Click here to go to the forum topic with the registration link. If you're interested, register now. Arrive a couple minutes early to make sure your connection is working. Set a reminder for yourself for this workshop so you don’t miss it.  And check out past workshops here: https://appliantology.org/announcement/33-webinar-recordings-index-page/

Coleman DGAT070BDD Flashes once


hyprdrvr

Recommended Posts

i have had many where the burner was a little dirty (or turned slightly grey) and i increased the reading several microamps by cleaning the area of the burner where the flame comes out from (3m scotchbrite pad). not saying that is absolutely the problem. but something to consider if the grounding of the burner has already been checked. also once in awhile the flame sensor rod gets glazed and touching it a little with small very fine file will help. (don't leave gouges, just very lightly)

p.s. a lot of boards only need 1 microamp

Edited by Bullstok
Link to comment
Share on other sites

  • Replies 32
  • Created
  • Last Reply

Top Posters In This Topic

  • jb8103

    14

  • hyprdrvr

    11

  • RegUS_PatOff

    4

  • jumptrout

    1

No luck on the manometer. At this point, everything leads to the new control board being bad. Ordered it online and missed the little note about no returns on circuit boards. I have emailed the manuf. (icm controls)...waiting for a response. Also,the temps have finally dropped to low 40s here in NW Louisiana, so I called the local coleman service tech. The will be here early next week to look at the recall issue. I'll have them figure it out if the manuf. can't/won't help me out.

Link to comment
Share on other sites

Neutral is grounded at the panel. If there is any voltage between neutral and ground inside the furnace cabinet you have a wiring problem somewhere. I only mention it in case you did not specifically check for it when taking the long shot. It's just that voltage on the neutral, or ground of course, would definitely have an effect on our microamps.

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
Link to comment
Share on other sites

Will do on the resolution post.

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.

Link to comment
Share on other sites

  • 3 weeks later...

All furnaces that use flame rectification are sensitive to propper polarity. Chech the 110VAC supplu (black) to ground, and the same Neutral (white) to ground. If they are reversed this will occur.

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.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...