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Rv furnace stopped working

Furnace went through heating cycle, stopped & then fan started up again for about 30 seconds. Twenty minutes later, furnace fired up & ran for 2 minutes, stopped, re-fired & ran for 6 minutes & then stopped. Twenty minutes later I heard thermostat click on & the furnace clicked, but nothing happened. I turned thermostat off. Turned it back on & heard the click from the furnace, but nothing happened. Propane tank is full. Unit is about 3 years old & about 1 year ago I had to have the motor replaced (rebuilt). Does it sound like the motor again, or is it something else (motherboard)? Your help will be greatly appreciated. Thank You, Gary Scott

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  • Ed Scott
    Ed Scott Nov 23, 2013

    The furnace is a Suburban NT34SP RV furnace

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  • 14 Answers

Quick call the installer to see if it is still under warranty. There is something wrong if the motor is being replaced every other year. Most of the motors should be lubed with fan turbine oil and not 3 in 1, nor detergent containing oils. If the wrong oil is used, the bearings will go south in 1 to 2 years.

Posted on Nov 23, 2013

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SOURCE: Heater blower motor cycles on and off (frequently). I have a class 2 LR95329 Honeywell Thermostat

I had the same problem with a Coleman. The problem is the blower relay. You can find this at http://mobilehomerepair.com

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SOURCE: My GOODMAN furnace GMH80703ANAA Starts but quits 5 seconds later

You have a flame sensor that may just need cleaning take out and take fine sand paper or emery cloth and clean

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SOURCE: GDS80904BNA Goodman furnace only cylces off for a minute

Sounds like your repair man ripped you off. He should have stood behind his work.
1. I would try to clean the flame sensor located just below the burners. It is connected to "one" wire (Not the two wire) clean rod with sandpaper.
2. The old and thermostat could have a had a bad heat anticipator. if the new t/stat is not digital the heat anticpator on the T/stat needs to be adjusted. slide the small adjuster arm under the cover to about .6 or .7 and see if the solves the problem. if the t/stat is digital it should be preset from the factory.
3. last resort have a service man check your pressure swith. could be a slow inducer motor, blocked or bad vacum line, or a restricted drain or flue pipe.
Good luck!

Posted on Mar 08, 2009

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SOURCE: weatherking furnace is starting and stopping

This just sounds like a couple of problems. First, your blower is designed to only turn on once the heat exchanger heats up, so the flame will be on for a minute or two before the blower starts. it sounds like your blower is cooling down the heat exchanger too fast and causing it to shut off so it can warm up again...check blower speed for heat, it should be the lowest speed (black wire). Blue=medium speed, red= high speed. second problem could be your flame sensor rod is calcified, you just need to locate this and clean it off with some fine sand paper.it is located in the flames near the burners. Also change your filters, for proper air flow through your heat exchanger.

Posted on Oct 28, 2009

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SOURCE: My Gibson Furnace clicks on but no heat comes out.

After four years I do not thing you have an effective warranty even if the company still in business. you need to open it first and clean it from any builod up dust and check the switch to see if it is working (thermostate)

Posted on Nov 08, 2009

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