Community Forums

azSkier · 03-16-2017, 09:33 PM

My coach has been in storage for the past 4.5 months. Time to get ready for the big Spring trip!

I finished replacing the original backup camera with a modern system from Rear view safety (wired system). Installing the new components was pretty straight forward, but I just had to tempt fate and remove all the old components and wiring.

The space inside the dash is just a rats nest of wires... miles upon miles. I found the wires of interest and gently extracted them from the harness.

When everything was removed and working, I drove the coach and noticed the driver side AC was blowing cold (good since I did have the AC on). At some point, I noticed the passenger side was very warm. I had no idea that this was even possible.

The blower is working as plenty of air is coming out of the vents.

I have no idea how this is happening, but I suspect the heater is stuck on (hot water is flowing) and is overwhelming the cooling system.

My trip starts in 2 weeks, so the countdown is on to get this problem fixed! All ideas will be appreciated.

JNSNWT · 03-17-2017, 07:49 AM

The cheapest easiest and fastest fix is to find the shut off valve close to the engine on the heater hose and close it. Then you couldn't find the real culprit at your leisure

azSkier · 03-17-2017, 09:28 AM

"Move along folks. Nothing to see here "

I was unaware that my dash ac was dual zone, with the temp control on the passenger console. With the ac on and the passenger temp control set to hot was my problem.

All is well...

vapor3000 · 03-17-2017, 11:17 AM

Quote:

Originally Posted by azSkier

"Move along folks. Nothing to see here "

I was unaware that my dash ac was dual zone, with the temp control on the passenger console. With the ac on and the passenger temp control set to hot was my problem.

All is well...

Wish we had that feature!

tom chelbana · 03-17-2017, 11:49 AM

We have a 04 Ex and bought it new and have 130K miles so we use it. Have had many problems over the years with AC and have spent at least 4K in the last few years for hoses, compressor and service time. On your unit the 1st thing to do is check if both heat hoses are hot after engine warms up. There is a control valve on the heater hoses that is closed when AC is on. If those heater hoses are hot after valve then that will AC not be cold. You can use vise grips to pinch hose shut if hot and see what effect that has on AC.

azSkier · 03-17-2017, 12:26 PM

Thanks Everyone.

My inquiry to Newmar resulted in a pointer to manuals for various Dash AC systems.

Might be helpful for some...

Evans Tempcon, Inc - Technical Support