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Old 04-10-2018, 08:08 AM   #1
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Posts: 12
Furnace problems

Good morning, from other Forest River forums it appears furnace issues are across the Forest River line of RVs but specific to the FR3, 25DS if that matters.
I am typically a fair-weather camper but due to never ending winter and a dog show I had to use the RV.
Propane tank full, RV plugged into 30 amp. Fan set to auto, Furnace temp set at 75 (it was 25 outside). I heard the overhead click on and a few seconds later I heard the click in the furnace area, then nothing. Several seconds later, another click, nothing.
I changed the indoor fuse under the bed to be sure it wasnt a fuse issue. Still no luck.
Has anyone else had this issue?
Did you fix it yourself or is this a required mechanic fix? If fixed yourself, how/what part, etc?
Thank you .. luckily its starting to warm here BUT it made for one cold night!

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Old 04-10-2018, 08:26 AM   #2
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Location: Eastern Oklahoma, USA
Posts: 2,618
Just a quick guess.....sometimes you will have air in the gas line. The furnace will try to light 3 times, then shut down. Try lighting your stove and keep it lit until you have a good flame, then try the furnace again.
Hope this helps and good luck.


Gary & Trish
"PT Crew Member Since 11/2010"
2017 Prime Time Crusader 315RST TE 6.0 : 2007 Flagstaff 206ST MAC Series
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Old 04-10-2018, 08:29 AM   #3
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Someone is sure to ask so I'll get it out of the way.........

Propane turned on?
Lines cleared and tested using a stove burner?

2016 Rockwood 2703WS Sapphire
2016 F250 SD 6.2L
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Old 04-10-2018, 10:05 AM   #4
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Yes, sorry I forgot to say. Blue flame perfection from all burners on stove, hot water heater working like a champ.
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Old 04-11-2018, 01:00 AM   #5
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So you are plugged in? If not I would say you had a weak battery... because we had that problem.... did you check the sail switch?
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Old 04-12-2018, 07:03 AM   #6
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Long discussions on the net about this over the years. Many have changed their thermostat to fix the problem. Yes, sometimes it was the sail switch. Let us know, itís very frustrating. Check all vents to make sure you have proper air flow, incoming and exiting. Restrictions have caused these problems before.

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