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Error Code E4 on the Atwood Air Command RV Air Conditioner  

Question:

Hi, I have a 2017 Forest River Georgetown, I’m getting E4 code iit cycles from cooling to Fan after 15/20mins then back to cooling. Tried shutting breaker off then on. 2weeks ago did same then finally started working ok, then yesterday I turned it off for 30 while working on RV turn back on and coded again. ??

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Expert Reply:

An E4 code on your Atwood Air Command Rooftop RV Air Conditioner # AT15027-22 most likely indicates low refrigerant, the compressor is not running, or the thermistor is out of calibration. This is a serviceable unit. I suggest locating a qualified technician as it can be a difficult process.

Please note the attached image of E4 Error Code Troubleshooting.

expert reply by:
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Michael R
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