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E4 Error Code On Atwood Air Command RV Air Conditioner  

Updated 05/21/2024 | Published 08/01/2019

Question:

After about 10-20 minutes I get a code E-4 reading in the thermostat that is attached to the unit Is this ac unit serviceable as in ability to add r410 Freon Thank you

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Expert Reply:

The E4 error code you are getting on your Atwood Air Command Rooftop RV Air Conditioner # AT15027-22 does mean there is a lack of refrigerant, the compressor is not running, or the thermistor is out of calibration, as you can see in the cut out I added of a guide for this AC unit.

These units are absolutely serviceable, and it is strongly recommended you use a qualified technician as it can be a difficult process.

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Kyle S
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Mat

5/21/2024

I had one of these these air conditioners come in today. Customers complaint displays E4 code after 10 minutes of runtime.First thing I always do pull the filter. It was completely packed full of dirt. Test ran the unit for six hours no issues. So it’s possible that a clogged filter can cause an E4 code.

Matt profile picture

Matt

5/21/2024

Also had good temperature 60° input and 36° output. Also pulled the top cover and visually there was no signs of oil or anything.

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