3400-820 low duct temp
-
- Posts: 3
- Joined: Thu Dec 08, 2011 10:50 pm
My Coleman 3400-820 heater was producing less heat today than normal. I checked it with a thermometer at the floor duct and it was showing 92 degrees with an actual room temp of 70 degrees. The blower motor works fine and if I lower the thermostat setting the system will cycle like normal. I suspect that 1 or more of the coils may have gone open. If that is the case which restring kit will I need to order ?
-
- Posts: 3
- Joined: Thu Dec 08, 2011 10:50 pm
I fixed it today so I wanted to post in case anyone else had a similar problem. I found a loose wire going from 1 of the main wires coming off the fuses to the sequencer. I replaced the terminal and the temp went up 10 degrees. I kept checking and found the ductwork that connects the other side of the home to the furnace leaking and sealed that for another 10 degree boost. While I was checking the wiring I checked the resistance of all the heating coils and they were all less than a 5 ohm difference in resistance so they seem to be in good shape. All coils are getting the right voltage and the thermoswitches test good. I've been running the system for a few hours and it seems to be working normal.
-
- Similar Topics
- Replies
- Views
- Last post
-
-
Ideas for A Low Bugdet Furnace
by lpaigeg268 » Mon Apr 02, 2018 10:36 pm » in Service & Repair of Other Brands - 2 Replies
- 24474 Views
-
Last post by lpaigeg268
Sun Jul 07, 2019 10:13 pm
-
-
-
Are low taxes worth investing into a old mobile home to make it more energy efficient?
by spazatac » Sun Jun 30, 2019 11:30 am » in Off Topic Discussions - 2 Replies
- 33299 Views
-
Last post by spazatac
Sat Jul 06, 2019 6:47 pm
-
-
- 0 Replies
- 28087 Views
-
Last post by bjwag123
Thu Oct 10, 2019 12:08 pm
-
- 2 Replies
- 13411 Views
-
Last post by JD
Sun Sep 17, 2017 4:34 pm
-
- 1 Replies
- 23427 Views
-
Last post by Greg
Tue Dec 26, 2017 7:33 pm