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Topic: Dash a/c (Read 839 times) previous topic - next topic

Dash a/c

We're the third owners of this coach, and the people we bought it from were close friends of the original owners. We were told that the dash a/c never worked from new, even with a factory rebuild under warranty. I tried it a couple of times, and it didn't work. Today it was cool enough to start with that we didn't have the roof a/c on. As it got a bit warmer (and we were climbing) I turned on the dash a/c thinking that it would at least blow some air around. Both of us were shocked to feel cool air coming out of the vents! Never did need to turn on the roof a/c today.

Will it work next time? Who knows. Why did it work today? Who knows. I'm just happy it did work once.

Re: Dash a/c

Reply #1 –
Well, it was nice while it lasted. Took off this morning with the dash air on, but it wasn't long before there was no more cool air. Oh well.

Re: Dash a/c

Reply #2 –
My dash A/C was working but the other day with it on I was having my voltage dropping from 13.8V down to about 12.6V.I turned the A/C off and voltage came back up to 13.6V.
Anyone have ideas what to check or ideas what is causing it?
Thanks for the help
Ron
Ron Clark
Sherwood,Arkansas
1999 U 295 40 foot Build # 5550
2020 Jeep Gladiator
Motorcade # 18173
FMCA # F485593

Re: Dash a/c

Reply #3 –
Quote from: kb0zke –
Well, it was nice while it lasted. Took off this morning with the dash air on, but it wasn't long before there was no more cool air. Oh well.

If the unit cools sometimes and sometimes not, most likely an electrical problem. See if you are getting voltage at the compressor and work back from there, thermostat, low pressure cut out switch, push button on the AC controls.............

Might be an easy fix,  ;D
Justin & Cathy Byrd
1995 U280 "Old Faithful"
36' Build #4673
C8.3 Cummins
Allison MD3060R 6 speed - retarder
Powertech 10KW  4cyl Kubota

Re: Dash a/c

Reply #4 –
Quote from: rclark –
My dash A/C was working but the other day with it on I was having my voltage dropping from 13.8V down to about 12.6V.I turned the A/C off and voltage came back up to 13.6V.
Anyone have ideas what to check or ideas what is causing it?
Thanks for the help
Ron
In my case it was the condenser fan motor. It was kicking the circuit breaker on and off also.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Dash a/c

Reply #5 –
The problem which caused my intermittent A/C operation came down to a loose connection for the condenser fan motor.  On my coach there is a panel which contains relays, fuses and connections for the dash A/C condenser and compressor.  The panel is located on the forward bulkhead of the engine compartment, accessed from inside the coach beneath the bed.  The connection which I ultimately found to be loose was totally hidden behind wires on this panel.  Simply cleaning and tightening this connection solved a very long standing and frustrating problem. 
Jan & Richard Witt
1999 U-320  36ft WTFE
Build Number: 5478 Motorcade: 16599
2011 Jeep Wrangler Unlimited w/Air Force One
Jan: NO5U, Richard:KA5RIW
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Re: Dash a/c

Reply #6 –
Thanks for all the suggestions I will get started on it as soon as the rain stops.

John and Shara Wilkerson pulled in yesterday in his 2004 U295. He sure has a good shiny paint job on it.
Ron Clark
Sherwood,Arkansas
1999 U 295 40 foot Build # 5550
2020 Jeep Gladiator
Motorcade # 18173
FMCA # F485593