Community Forums

Cephas · 09-19-2022, 09:59 AM

I recently purchased a Northwood 2011 Fox Mountain 245 rks. Really like the unit. When I turn on the heater it fires up and heats well. After temps rise and the unit shuts off it does not come back on. I can turn heater off and then back on and it will fire up again and then not come on. I suspect the thermostat but I’m not at all sure. Any suggestions? Thank you very much.

Old-Biscuit · 09-19-2022, 10:10 AM

Could be the circuit board for furnace.

What is the Furnace Brand/Model??

Cephas · 09-19-2022, 08:27 PM

Quote:

Originally Posted by Old-Biscuit

Could be the circuit board for furnace.

What is the Furnace Brand/Model??

Hey Biscuit, It is late so I'll get back with you tomorrow, thanks for the help, Steve

Cephas · 09-20-2022, 05:15 PM

Quote:

Originally Posted by Old-Biscuit

Could be the circuit board for furnace.

What is the Furnace Brand/Model??

Atwood
Model#: 8531-LV DCLP

Today I opened back cover to look at things and as soon as I did the furnace came on. It cycled without having to turn unit off and on again. My wife is working at her job in the rv and it stayed warm all afternoon but seemed to cycle to fast. Hmmm..... Nope, I don't have a clue what is going on.

Old-Biscuit · 09-20-2022, 05:56 PM

With Exterior cover removed check the wire connection on circuit board. Make sure it is making solid contact with board
* how many wires in connector?
3---white, red, black
4---white, BLUE, red, black

Cycling too fast?
How long would it run before shutting off then starting again?
Thermostat temp set point---how many degrees deviation between start/stop/start?

Cephas · 09-22-2022, 09:16 AM

Quote:

Originally Posted by Old-Biscuit

With Exterior cover removed check the wire connection on circuit board. Make sure it is making solid contact with board
* how many wires in connector?
3---white, red, black
4---white, BLUE, red, black

Cycling too fast?
How long would it run before shutting off then starting again?
Thermostat temp set point---how many degrees deviation between start/stop/start?

Thank you much for your help. I know this is strange. It quit cycling fast and is now doing the same as it did at first, ie Comes on and then doesn't come on again until it is either turned off and back on or thermostat lever is pushed to the left (cooler) and then broght back up. Pushing the lever to right does not work even if the temp in the room has gone down 20 degrees.

Old-Biscuit · 09-22-2022, 10:46 AM

Circuit board.

CalCamp · 09-23-2022, 10:28 AM

Quote:

Originally Posted by Cephas

It quit cycling fast and is now doing the same as it did at first, ie Comes on and then doesn't come on again until it is either turned off and back on or thermostat lever is pushed to the left (cooler) and then broght back up. Pushing the lever to right does not work even if the temp in the room has gone down 20 degrees.

I had issues with my heater acting up, not like your's, but as you said you need to push your thermostat lever to the left then reset it to the right, makes me wonder.

My heater would go through the cycle of heating then, when it reached the right temp, run the blower only to cool off the heater. It is supposed to shut down totally after a bit and not restart until heat is called for again. Mine started to shut down totally but, before the fan would stop, it would start up again on the cool down cycle. It would do this 3-4 times before finally stopping.

I replaced the thermostat with one from the BORG and never had another issue. Quite a bit cheaper than a control board, but not positive it will work in your case.

Happy travels . . .

Old-Biscuit · 09-23-2022, 10:36 AM

Quote:

Originally Posted by CalCamp

I had issues with my heater acting up, not like your's, but as you said you need to push your thermostat lever to the left then reset it to the right, makes me wonder.

My heater would go through the cycle of heating then, when it reached the right temp, run the blower only to cool off the heater. It is supposed to shut down totally after a bit and not restart until heat is called for again. Mine started to shut down totally but, before the fan would stop, it would start up again on the cool down cycle. It would do this 3-4 times before finally stopping.

I replaced the thermostat with one from the BORG and never had another issue. Quite a bit cheaper than a control board, but not positive it will work in your case.

Happy travels . . .

Strange^^^^

Fan is controlled by furnace circuit board. Nothing to do with thermostat
Thermostat triggers circuit board but after that all functions are via circuit board

CalCamp · 09-23-2022, 11:20 AM

Quote:

Originally Posted by Old-Biscuit

Strange^^^^

Fan is controlled by furnace circuit board. Nothing to do with thermostat
Thermostat triggers circuit board but after that all functions are via circuit board

Strange as it may be, I spoke with a guy that sells beefed up boards, can't remember the name but dinosaur comes to mind, and he said it was the thermostat. So, off to the BORG I went and picked one up. Installed it and had absolutely no issues afterwards.

I'm not an ET so I can't tell you how/why it worked. This was on my '04 24-5N. I had that from '03 to '19 or so. I'd have to do a search as to when all this happened, but I'd guess around '13 or '14. We only put about 80 or 90k miles on that rig.

Back to morning brew . . .

OK, OK, I searched. It was in Feb of '04. It was before I smartened up and learned the etiquette of posting the final fix, but here is the posting.

sls4him · 04-30-2023, 02:03 PM

Quote:

Originally Posted by Old-Biscuit

Strange^^^^

Fan is controlled by furnace circuit board. Nothing to do with thermostat
Thermostat triggers circuit board but after that all functions are via circuit board

Bought a digital thermostat to replace the analog and no more problem. Thanks to all for the help.

Rotten-Red · 04-30-2023, 08:19 PM

[QUOTE=CalCamp;6315645]I had issues with my heater acting up, not like your's, but as you said you need to push your thermostat lever to the left then reset it to the right, makes me wonder.

My heater would go through the cycle of heating then, when it reached the right temp, run the blower only to cool off the heater. It is supposed to shut down totally after a bit and not restart until heat is called for again. Mine started to shut down totally but, before the fan would stop, it would start up again on the cool down cycle. It would do this 3-4 times before finally stopping.

I replaced the thermostat with one from the BORG and never had another issue. Quite a bit cheaper than a control board, but not positive it will work in your case.

Happy travels . . .[/QUOTE

If you were starting to heat with a cold coach I don't think that is that unusual for the furnace to cycle back on during the cool down cycle. During the cool down cycle the blower is still circulating cooler air since the coach interior is cold and takes time to acclimate to the air temperature. I had an Allegro motorhome which would do that when starting out with a cold interior. Once the interior warmed up it would only cycle on and off as needed.

CalCamp · 05-01-2023, 03:22 PM

[QUOTE=Rotten-Red;6487851]

Quote:

Originally Posted by CalCamp

I had issues with my heater acting up, not like your's, but as you said you need to push your thermostat lever to the left then reset it to the right, makes me wonder.

My heater would go through the cycle of heating then, when it reached the right temp, run the blower only to cool off the heater. It is supposed to shut down totally after a bit and not restart until heat is called for again. Mine started to shut down totally but, before the fan would stop, it would start up again on the cool down cycle. It would do this 3-4 times before finally stopping.

I replaced the thermostat with one from the BORG and never had another issue. Quite a bit cheaper than a control board, but not positive it will work in your case.

Happy travels . . .[/QUOTE

If you were starting to heat with a cold coach I don't think that is that unusual for the furnace to cycle back on during the cool down cycle. During the cool down cycle the blower is still circulating cooler air since the coach interior is cold and takes time to acclimate to the air temperature. I had an Allegro motorhome which would do that when starting out with a cold interior. Once the interior warmed up it would only cycle on and off as needed.

This is from the posting you may not have read, and it reads more clearly.

"My heater would go through the cycle of heating then, when it reached the right temp, run the blower only to cool off the heater. It is supposed to shut down totally after a bit and not restart until heat is called for again. Mine started to shut down totally but, before the fan would stop, it would start up again on the cool down cycle. It would do this 3-4 times before finally stopping."

Hope this clears things up. A trip to the BORG and 10 min of work replacing the thermostat and everything was good.

Safe Travels . . .