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Old 09-10-2016, 07:14 AM   #1
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Furnace won't come on

Had HP running during the night and temp got down to 25. Turned mode on thermostat to furnace and will not come on. Not much trouble shooting info onboard. Any suggestions?


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Old 09-10-2016, 07:38 AM   #2
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Need to know year and model of coach and options such as propane, oasis etc.
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Old 09-10-2016, 07:46 AM   #3
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If the fan would run did you hear any clicking from them? Is your propane on? Since you have shorline it shouldn't be low battery voltage but be sure to check.

Low voltage can cause a fan to run but no ignition due to low air flow.
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Old 09-10-2016, 08:22 AM   #4
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Propane is on and checked fuse at breaker box.


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Old 09-10-2016, 08:35 AM   #5
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Quote:
Originally Posted by bevo7 View Post
Had HP running during the night and temp got down to 25. Turned mode on thermostat to furnace and will not come on. Not much trouble shooting info onboard. Any suggestions?
bevo7
To provide you with useful advice you need to tell us:
1.) The make and model number of your furnace.
2.) Exactly what happens when you turn the thermostat to furnace mode.
Mel
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Old 09-10-2016, 02:41 PM   #6
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Here is a link that may help.
The furnace temp is set for the right zone for heat?
Is there a gas valve entering the furnace location and its on?
Do you hear the furnace fan come on?
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Old 09-10-2016, 05:41 PM   #7
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Old 09-10-2016, 05:42 PM   #8
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When I turn it to furnace mode, no sound or anything.


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Old 09-10-2016, 08:13 PM   #9
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OP,

We are all stabbing at the issue. I would suggest, since you maybe facing another low temperature night, that you contact the after hours customer line at Newmar (800.731.8300). If possible have your build number and or the last 6 characters of your VIN number. They should be better suited to quickly assess your situation and propose a solution.

Best of luck.
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Old 09-11-2016, 02:47 AM   #10
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Furnace won't come on

I did that a couple days ago, not much help. Sitting in West Yellowstone, Wy. unable to get my FWS out and no furnace, other than that making the best if it.


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Old 09-11-2016, 10:20 AM   #11
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Here are some files, hopefully they will help.

Have you measured 12 volts and ground at the furnace?

There are so many fuse holders in strange places on my rv and others that it is easy to miss a complete fuse panel.



Lots of`excellent videos available.
Attached Files
File Type: pdf 8900 Series Installation.pdf (429.1 KB, 25 views)
File Type: pdf Duo.pdf (1.27 MB, 17 views)
File Type: pdf Furnace Parts.pdf (65.4 KB, 20 views)
File Type: pdf Furnace Troubleshooting.pdf (314.5 KB, 26 views)
File Type: pdf Furnace Wiring.pdf (53.3 KB, 21 views)
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Old 09-11-2016, 10:33 AM   #12
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I had my front furnace refuse to light but it did run. Cycled the coach batteries and it lit and made heat. Costs nothing to try but I was lucky and it worked.

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Old 09-11-2016, 01:00 PM   #13
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Quote:
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I did that a couple days ago, not much help. Sitting in West Yellowstone, Wy. unable to get my FWS out and no furnace, other than that making the best if it.


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he only thing the FWS and furnace have in common is your 12 volt system. Have you checked for power at both?
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Old 09-11-2016, 07:29 PM   #14
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Yes power to both. Bedroom slide works fine by the way.


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