I have a Coleman DGAT075BDD furnace that blowed the 3 amp fuse a few weeks ago so I replaced it and has worked fine until last night. I woke up cold and found the fuse blown again so I replaced it but the fan came on and would not go off and it was flashing a code 4. I started checking everything I thought it could be and foung that the upper limit switch has a reset and was triped. I reset it and repowered the unit and it has worked all day. My question is what caused this, is the board going bad or maybe the limit switch. Any help would be greatly appreciated.
Terry
Coleman DGAT075BDD problem
Disconnect all the Blend Air wiring on that unit. There has been a few instances where the Blend Air control board confuses the furnace's control board, sometimes it even causes it to fry out. Fortunately this time it was only the fuse. I am a Coleman warranty rep and did receive a service bulletin about this many years ago. I always pull the Blend Air systems whenever I run into them on any unit I service.
-
- Similar Topics
- Replies
- Views
- Last post
-
- 2 Replies
- 56937 Views
-
Last post by jazsimpson
Sat Jul 08, 2017 8:16 am
-
- 0 Replies
- 54748 Views
-
Last post by Montanan
Wed Jan 03, 2018 1:03 pm
-
- 0 Replies
- 47688 Views
-
Last post by Kourgath
Fri Mar 23, 2018 3:41 pm
-
-
LOUD Blower on Coleman Presidential 2 900759
by AuntKatie » Thu Apr 05, 2018 6:50 pm » in Coleman Service & Repair - 0 Replies
- 42177 Views
-
Last post by AuntKatie
Thu Apr 05, 2018 6:50 pm
-
-
-
Eb12eb Coleman furnace 4 speed help.
by Johnwayne892000 » Thu Aug 30, 2018 7:37 pm » in Coleman Service & Repair - 0 Replies
- 23106 Views
-
Last post by Johnwayne892000
Thu Aug 30, 2018 7:37 pm
-