Need some advice on Sleeper AC not working!

AC? Sleeper? What are those?

 

if one line is cold and the other is warm that means the Freon is moving and doing its job so yeah my first guess is water control valve.

 

Sounds like the sleeper expansion valve needs to be replaced some have 2 one for the front one for the back,depending on the year you can just have one for both like mines,but newer trucks are located under the sleeper cab tight spot to get to.
I only have one its under the passengers seat thats where my expansion valve,evaporator and heating core is located at.

 

Not sure on the Century,.. but on my Columbia my sleeper has its own condenser with its own lines for AC. It still uses the same heat exchanger on the front as the main AC,.. but the rest is independent of the main AC. Also has its own heater core and coolant lines for heat as well. Not sure how the control panel in the sleeper controls it all. But there is also an over ride switch on the front dash next to the main HVAC controls. Have you tried setting the front to max cool with the front fan to 100% and then set the over ride to see if it blows cool back in the sleeper? That should eliminate whether its in the control panel or not.

I spent $2000 replacing my AC system, plus the HVAC control panel with all new parts when I first bought my truck. Expensive,.. but one thing they do well in Fla and thats AC work. LOL That was just over a year ago and have not had a problem since.

Hurst

 

Your better off there then at Freightliner off 301.

I go to J&M in Ocala for major work, and then I have a guy locally in Brooksville that does my PM and maintenance services.

Hurst

 

Hurst I'm glad you mentioned J&M because I'm currently looking for a shop that can do the big jobs, motor, trans and rears. My cousin recommends diesel head group in Ocala also. But couldn't get anyone on the phone.