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Wood River Pod
Senior Member
Joined: 30 Sep 2016
Location: Wood River, ID
Online Status: Offline
Posts: 153
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Topic: Furnace Posted: 15 Oct 2018 at 12:02pm |
Glad you figured it out!
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TheBum
Senior Member
Joined: 26 Feb 2016
Location: Texas
Online Status: Offline
Posts: 1407
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Posted: 15 Oct 2018 at 11:40am |
Nice bit of troubleshooting!
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Alan
2022 R-Pod 196 "RaptoRPod"
2022 Ram 1500 Lone Star 4x4
Three cats
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offgrid
Senior Member
Joined: 23 Jul 2018
Online Status: Offline
Posts: 5290
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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.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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D&K Davis
Newbie
Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21
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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.
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offgrid
Senior Member
Joined: 23 Jul 2018
Online Status: Offline
Posts: 5290
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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
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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Wood River Pod
Senior Member
Joined: 30 Sep 2016
Location: Wood River, ID
Online Status: Offline
Posts: 153
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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
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D&K Davis
Newbie
Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21
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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).
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D&K Davis
Newbie
Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21
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Posted: 14 Oct 2018 at 4:14pm |
This has an lcd thermostat but I’ve reset it
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D&K Davis
Newbie
Joined: 16 Oct 2016
Location: Indiana
Online Status: Offline
Posts: 21
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Posted: 14 Oct 2018 at 4:13pm |
Fuse in the breaker box is good
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CharlieM
Senior Member
Joined: 23 Nov 2012
Location: N. Colorado
Online Status: Offline
Posts: 1797
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Posted: 14 Oct 2018 at 3:18pm |
When the thermostat calls for heat the blower should start immediately. That clears fumes/gas from the heater before it even tries to ignite. If you don't hear the blower something in the 12V system is amiss. Check the fuse. Only one of the wires to the thermostat will have 12V; the other will be ground, maybe through the blower motor.
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Charlie
Northern Colorado
OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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