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Atwood Air Command Air Conditioner Fan Constantly Running Even in Auto Mode

Question:

I have an Atwood air command unit on an RV I purchased a year ago and no matter if the fan setting is on auto the fan will always run. The compressor will kick off and on once the temperature is reached but the fan never will. The fan will automatically adjust speeds from high/medium/low but never fully turn off. I will attach pictures of the thermostat. Thank you very much!

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Expert Reply:

In cooling mode, the fan does indeed run constantly by design. Since you use the "auto" fan speed, the fan will run at slow speed when the compressor is off, and then cycle up to a higher speed as needed when the compressor starts.

In heat mode the fan does not run constantly. When the compressor shuts off, the fan shut off shortly thereafter as the heat in the cols has dissipated. Then it will run the fan every few minutes on slow to check the air temperature to maintain your temp setting. When the temp is determined to be too cold the compressor with kick on and heat the coils then the fan will kick on so it doesn't circulate cold air but only the warm air.

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