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D&K Davis

Newbie

Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21

Topic: Furnace
Posted: 14 Oct 2018 at 4:14pm

This has an lcd thermostat but I’ve reset it

D&K Davis

Newbie

Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21

Posted: 14 Oct 2018 at 9:20pm

When I put the thermostat on auto and heat and turn it up nothing happens, no clicks no blowers nothing. Apparently the dealer did not give us the manual for the furnace or the thermostat. The best I can tell the two thermostat (small 18 ga wires) should go to the two blue wires on the furnace. When the thermostat sends a signal these two wires should send 12 volts to the blue wires in the furnace. Only one is getting 12v. I need to find out how to troubleshoot the thermostat. If that’s good then I need to find that bad connection or broken wire( zebra).

Wood River Pod View Drop Down

Senior Member

Joined: 30 Sep 2016
Location: Wood River, ID
Online Status: Offline
Posts: 153

Posted: 14 Oct 2018 at 9:30pm

We just had some heater issues as well with our 2 yr old 179.

We were camping and the heater turned off suddenly after working fine. No matter what I tried, it would not turn back on. When we tried, the fan would run for 20 secs and then turn off. There are three switches than experience regular failure inn these units. 1st is a sail switch which measures if the outside air flow is working. The next is a over limit switch that will shut down the heater if the heat gets to hot. The last is another sail switch which won't allow the gas to light or "click". I could see the 1st switch was working. I had to take the unit in for service. They replaced both over limit and sail switch. Works great now.

If the fan is not firing, it could be the first sail switch. Check out YouTube. You can see a video how to check to see if the airflow is sufficient.

Best of luck.

Thanks

Jeff

Smith's in Hailey
Early 2017 179 HRE

Wood River Mods

offgrid

Senior Member

Joined: 23 Jul 2018
Online Status: Offline
Posts: 5290

Posted: 15 Oct 2018 at 6:01am

In looking at the schematic (right side of page 35 in the link I sent) I do not think the sail switch will effect fan operation. It is there to assure that the fan is working before an ignition signal is sent.

D&K Davis, if the thermostat is not closed you would get 12V to ground on one of the blue wires only. So you are right to suspect the thermostat or its wiring.

If you go to the furnace and jumper together the two terminals where the the two blue wires from the thermostat are connected that should simulate the thermostat calling for heat. If the furnace then works normally you know you either have a bad wire or a broken tstat.

Good luck

1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold

D&K Davis

Newbie

Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21

Posted: 15 Oct 2018 at 11:00am

Problem solved. I jumped the two blue wires on the furnace and the furnace cycled properly. Then I went into the AC unit because that is where the wires from the thermostat go before coming down to the furnace. That is where the problem was. Two sets of wires did not get crimped properly at the factory and had come disconnected. After figuring out the proper connection and wiring them back together everything works fine. Blows out good heat and cycles properly. Now on to my next problem. The hot water heater. I will start a new thread for that.

offgrid

Senior Member

Joined: 23 Jul 2018
Online Status: Offline
Posts: 5290

Posted: 15 Oct 2018 at 11:23am

Congrats on getting that one fixed. And you've now experienced the sometimes iffy qc done by FR in manufacturing our trailers.

1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold

TheBum

Senior Member

Joined: 26 Feb 2016
Location: Texas
Online Status: Offline
Posts: 1407

Posted: 15 Oct 2018 at 11:40am

Nice bit of troubleshooting!

Alan
2022 R-Pod 196 "RaptoRPod"
2022 Ram 1500 Lone Star 4x4
Three cats

Wood River Pod View Drop Down

Senior Member

Joined: 30 Sep 2016
Location: Wood River, ID
Online Status: Offline
Posts: 153

Posted: 15 Oct 2018 at 12:02pm

Glad you figured it out!

Smith's in Hailey
Early 2017 179 HRE

Wood River Mods

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D&K Davis Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 Oct 2016 Location: Indiana Online Status: Offline Posts: 21	Topic: Furnace Posted: 14 Oct 2018 at 4:14pm
	This has an lcd thermostat but I’ve reset it

D&K Davis Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 Oct 2016 Location: Indiana Online Status: Offline Posts: 21	Posted: 14 Oct 2018 at 9:20pm
	When I put the thermostat on auto and heat and turn it up nothing happens, no clicks no blowers nothing. Apparently the dealer did not give us the manual for the furnace or the thermostat. The best I can tell the two thermostat (small 18 ga wires) should go to the two blue wires on the furnace. When the thermostat sends a signal these two wires should send 12 volts to the blue wires in the furnace. Only one is getting 12v. I need to find out how to troubleshoot the thermostat. If that’s good then I need to find that bad connection or broken wire( zebra).

Wood River Pod Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 30 Sep 2016 Location: Wood River, ID Online Status: Offline Posts: 153	Posted: 14 Oct 2018 at 9:30pm
	We just had some heater issues as well with our 2 yr old 179. We were camping and the heater turned off suddenly after working fine. No matter what I tried, it would not turn back on. When we tried, the fan would run for 20 secs and then turn off. There are three switches than experience regular failure inn these units. 1st is a sail switch which measures if the outside air flow is working. The next is a over limit switch that will shut down the heater if the heat gets to hot. The last is another sail switch which won't allow the gas to light or "click". I could see the 1st switch was working. I had to take the unit in for service. They replaced both over limit and sail switch. Works great now. If the fan is not firing, it could be the first sail switch. Check out YouTube. You can see a video how to check to see if the airflow is sufficient. Best of luck. Thanks Jeff
	Smith's in Hailey Early 2017 179 HRE Wood River Mods

offgrid Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290	Posted: 15 Oct 2018 at 6:01am
	In looking at the schematic (right side of page 35 in the link I sent) I do not think the sail switch will effect fan operation. It is there to assure that the fan is working before an ignition signal is sent. D&K Davis, if the thermostat is not closed you would get 12V to ground on one of the blue wires only. So you are right to suspect the thermostat or its wiring. If you go to the furnace and jumper together the two terminals where the the two blue wires from the thermostat are connected that should simulate the thermostat calling for heat. If the furnace then works normally you know you either have a bad wire or a broken tstat. Good luck
	1994 Chinook Concourse 1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold

D&K Davis Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 16 Oct 2016 Location: Indiana Online Status: Offline Posts: 21	Posted: 15 Oct 2018 at 11:00am
	Problem solved. I jumped the two blue wires on the furnace and the furnace cycled properly. Then I went into the AC unit because that is where the wires from the thermostat go before coming down to the furnace. That is where the problem was. Two sets of wires did not get crimped properly at the factory and had come disconnected. After figuring out the proper connection and wiring them back together everything works fine. Blows out good heat and cycles properly. Now on to my next problem. The hot water heater. I will start a new thread for that.

offgrid Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290	Posted: 15 Oct 2018 at 11:23am
	Congrats on getting that one fixed. And you've now experienced the sometimes iffy qc done by FR in manufacturing our trailers.
	1994 Chinook Concourse 1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold

TheBum Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 26 Feb 2016 Location: Texas Online Status: Offline Posts: 1407	Posted: 15 Oct 2018 at 11:40am
	Nice bit of troubleshooting!
	Alan 2022 R-Pod 196 "RaptoRPod" 2022 Ram 1500 Lone Star 4x4 Three cats

Wood River Pod Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 30 Sep 2016 Location: Wood River, ID Online Status: Offline Posts: 153	Posted: 15 Oct 2018 at 12:02pm
	Glad you figured it out!
	Smith's in Hailey Early 2017 179 HRE Wood River Mods