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charlesdennis01's avatar
charlesdennis01
Explorer
Nov 03, 2017

Furnace not working please help

This morning I woke up to a frezzing camper. We are full time campers :) and we are connected to power 24/7. The furnace was working fine last night but this morning it wasn't. I can hear the clicking noise from the thermostat but fan or furnace doesn't come on. I checked the output and no obstructions, have check the propane, tanks are full (100 pounds tanks), all 3 burners come on with good flame. Can I get some help, I have to fix it my self because I can't move the camper
  • drsteve's avatar
    drsteve
    Explorer
    Nov 04, 2017
    Ask at the camp office about a mobile tech, they know who the good ones are.
  • charlesdennis01's avatar
    charlesdennis01
    Explorer
    Nov 03, 2017
    Thank you for all the tips looks like one way or another I'm gonna have to wait until Monday to get anything done because most places will be close on the weekend to get parts. Again thank you for everyones help
  • midnightsadie's avatar
    midnightsadie
    Explorer II
    Nov 03, 2017
    you might call a mobil tech they,ll come to you. if your not 100% sure of what your doing. you could make things worse. buzz sound could be fan motor froze up. good luck.
  • enblethen's avatar
    enblethen
    Nomad
    Nov 03, 2017
    Wiring diagram in this manual. Use test light to follow power or lack there of.
    Manual
    Check for fuse on circuit board.
  • charlesdennis01's avatar
    charlesdennis01
    Explorer
    Nov 03, 2017
    westend wrote:
    Download your furnace's service manual and troubleshooting chart here: Bryant RV service manuals

    A buzz may indicate a failed relay, stuck sail switch, or blocked blower. Roll blower over, mechanically. Check input and exhaust on exterior for insects, leaves, etc. Move sail switch, mechanically and make sure it travels without sticking. When the thermostat calls for heat, the first step is operating the blower to exhaust any gasses and to insure air and exhaust can flow into combustion area.


    The make is from Atwood and the model from the sticker in the furnace reads AFMD35121_ _ A is a 35K BTU-HR
  • charlesdennis01's avatar
    charlesdennis01
    Explorer
    Nov 03, 2017
    charlesdennis01 wrote:
    enblethen wrote:
    Did you try spinning the fan by hand?
    Look for a small time delay relay mounted on the fan housing. Inspect it for black burnt area.
    Verify 12 volts DC to relay
    Do you have exact make and model?
    I took a picture of the sticker on the furnace and is model AFMD25121_ _ A is made by Atwood hydro flame


    I took the panel off from under the fridge and getting the process started to get the furnace out, I don't have and outside panel to access so have to do it the hard way. Do I have to unscrew the small vent outside first or can I pull the furnace with having to remove the small vent outside
  • charlesdennis01's avatar
    charlesdennis01
    Explorer
    Nov 03, 2017
    enblethen wrote:
    Did you try spinning the fan by hand?
    Look for a small time delay relay mounted on the fan housing. Inspect it for black burnt area.
    Verify 12 volts DC to relay
    Do you have exact make and model?
    I took a picture of the sticker on the furnace and is model AFMD25121_ _ A is made by Atwood hydro flame
  • westend's avatar
    westend
    Explorer
    Nov 03, 2017
    Download your furnace's service manual and troubleshooting chart here: Bryant RV service manuals

    A buzz may indicate a failed relay, stuck sail switch, or blocked blower. Roll blower over, mechanically. Check input and exhaust on exterior for insects, leaves, etc. Move sail switch, mechanically and make sure it travels without sticking. When the thermostat calls for heat, the first step is operating the blower to exhaust any gasses and to insure air and exhaust can flow into combustion area.
  • enblethen's avatar
    enblethen
    Nomad
    Nov 03, 2017
    Did you try spinning the fan by hand?
    Look for a small time delay relay mounted on the fan housing. Inspect it for black burnt area.
    Verify 12 volts DC to relay
    Do you have exact make and model?

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