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shawnct450r's avatar
shawnct450r
Explorer
Feb 27, 2014

Atwood heater failure - need advise!

The Atwood 8531 model heater for my camper fails to produce heat. Started two days ago.

I drove across country several weeks ago, and it worked perfect through the cold and storms in the southeast. Upon my arrival in Cali, it worked perfect for the couple weeks of use while here.

Fast forward to now. The fan comes on, but there is no sound from the igniter and I am blowing cold air.

Filled both propane bottles (they were not empty), and I'm plugged in @ RV spot.

Removed the propane supply assembly from the heater and inspected the igniter assembly. Perfectly clean and functional. DID remove some corrosion from the wiring connection to the igniter with a wire brush. No change.

RV store is telling me the circuit board is probably the culprit ($140).

Any thoughts? This is a basic, gas-only, heater for a toy-hauler. Thanks in advance

24 Replies

  • Also if your battery is low the fan will run a little slower, and not put out enough air flow to turn on the sail switch.

    Dusty
  • there should be 2 blue wires. One to the sail switch and safety Temperature sensor. The other is the return.
    Make sure you have 12Vdc on both to ground. If you do not then it is either one of the safety devices. Easy to change.
  • Check all connections. The first thing to check for is low voltage.
  • BTW, with the temps here in Cali, my tip-safe cool-to-the-touch ceramic heater is doing just fine at keeping me warm. Very shortly, the ACs will be in need and the heater not-so-much. Just want to have everything in tip-top-shape.

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