Problem 2021 Newmar , Freightliner chassis . dash ac not working.

[Gdoubleoo]

2021 New mar New Air, dash air conditioner not working. Blowing warm. I have lots of Freon in the system according to the gauge I hooked up. Pulled fuse and replaced , not sure what else to do.

 

[Neal]

Welcome to RVForums.com @Gdoubleoo. Take a look at this thread:

Resolved - Dash A/C not blowing cold air

Brought coach out of storage finally for next trip after 8 months and I don't think the dash A/C is blowing cold air. Recirc etc. Any suggestions in anything I can check? Fuse bay shows all good. 6 years and fine until now. Next Gaffney visit is November.

rvforums.com

 

[SteveMA]

Gdoubleoo - does the compressor clutch engage when you switch the ac on (even for just a second)?

Theere was a known issue the Eaton PDM (Power Distribution Module - many fuses and breakers) next to the chassis batteries 2019-2021 and Freightliner has replaced them under a recall.

Also- i had the actuator at the heat/ac transfer box in the front go bad, so it was always circulating hot engine coolant and the AC cannot overcome the heat.

 

[SteveMA]

(PDM can be done at any Freightliner Elite service dealer after they get parts. Takes under a day. The coolant circulation i bypassed on the road and then replaced the servo/valve. Its a really archaic design….