Newmar Dutch Star Diesel Freightliner Chassis Dash A/C

[ronaldbrinley]

I have a 2000 Dutch Star Motorhome built on a Freightliner Raised Rail Chassis. The Dash A/C does not work. Blows hot air after engine warm up. The Vent function blows Hot air as well. Currently running generator and roof air while traveling. Having trouble getting someone to work on coach. They say they can not work on older coach than 2013. Any suggestions would be greatly appreciated.

[wildebill308]

I agree with Ray. It sounds like the water valve to the heater core is not working correctly and low on refrigerant. 

Where are you located?

Bill

[elibedarn]

I had that issue as well. I added a manual inline off valve to stop hot water flow into the heater core.  

[bestred1]

My suggestion would be to look for someone in your area that has worked on a Bus A/C system. There can be differences in the operating parameters for these systems as I recently learned on my Evans-Tempcon system in a 2011 Coachman. I previously posted my repair experience as I was misled by folks that work on auto systems. The suction side pressure is designed to operate considerably lower on my system as compared any auto A/C. This gave me issues for many months.

 

You made no mention about the A/C compressor cycling on & off. Pretty hard to give any repair advice other than what has already been responded.

[johnbro]

I’ve read the valves fail. A manual in IDD vakve is an easy and cheap fix. 

[billieb72]

We had the same issue in our DS4023DP and bought the can of refrigerant at Walmart and it worked.  

[wwwarren2]

I had similar issue on my 2005. Would blow cold until it warmed up. my issue was cooling fan not blowing. blown fuse. You should be able to hear fan kick on when you turn on.