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903429 M1 Series Furnace Control Board Control Circuit Board Replacement for Nordyne Inter-therm Miller, Replaces 624602, 6246020, 624602A, 624602B 624640

4.5 (1) Write Review
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$74.99

$ 36 .99 $36.99

In Stock
  • This parts fits serveral models of Intertherm / Miller / Nordyne gas furnaces. This part fits the following model units Model Number. M1MC 077A BW. M1MC 070A BW. M1MC 056A BW. M1MB 090A BW. M1MB 077A BW.
  • Replacement for Intertherm / Nordyne M1 Circuit Board 903429 1012-958A 624640-A
  • This is an integrated UTECH circuit board for M1M furnaces. he board also includes safety features such as an over-temperature protection system and a flame sensor to ensure safe operation.
  • Easy installation. Plug and play design that can be completed with minimal effort and experience
  • Note: to save yourself some hassle, please take a picture of the old one before removing it, make sure getting the wires on the correct terminals.


How to install this part:
1.Turn off the power to the unit.
2. Remove the existing control board from the unit.
3. Install the new control board in its place, making sure all connections are secure and properly aligned.
4. Connect all wiring to the new control board, following the instructions provided with it.
5. Replace any covers or panels that were removed during installation and turn on the power to the unit.


R. Summy
February 16, 2025
I needed this board to repair my mother in laws furnace in her mobile home. She had a voltage spike and it took out the voltage transformer and this control circuit card (besides other sensitive and unprotected devices). Would have taken a week to get one from local suppliers but fortunatley received this one in just a couple of days. this board was clearly marked and looke better than the one it replaced. I also installed an outlet in the furnace with a surge protector so another spike hopefully won't damage it again.