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Air conditioning question

June 29, 2012, 08:44:31 pm

No cold cab air and no cold roof airs ( both )
The fans work fine.

Just need charging or more serious problems?

Don

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Re: Air conditioning question

Reply #1 – June 29, 2012, 09:20:00 pm

Recharging our dash air did the trick.  It has been a good week of running since we had it done and the air is still cold  I read somewhere that the roof units cannot be recharged, but I am not sure of that. 

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Re: Air conditioning question

Reply #2 – June 30, 2012, 02:23:07 am

I think those are two separate problems.  The dash air is likely to be a recharging issue, but the roof air units are not rechargeable by normal means.  I would suspect a thermostat problem if both roof airs are not working.

What year/model is your coach?

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Re: Air conditioning question

Reply #3 – June 30, 2012, 02:18:20 pm

Year is a 2000 U270.

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Re: Air conditioning question

Reply #4 – June 30, 2012, 03:54:21 pm

Both our roof air conditioners (Penguin) need a minute or two before they start blowing cold air. Perhaps longer. I've never measured it but the first time I turned one on it had me worried for a while.

Craig

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Re: Air conditioning question

Reply #5 – June 30, 2012, 04:22:08 pm

The new Penguin that I had to install last year has a 2 minute delay built into it before it will start up, really annoying.
Gary B

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Re: Air conditioning question

Reply #6 – July 01, 2012, 10:52:55 am

The Diesel mechanic from Lufkin, TX, the first town south of NAC, works on roof A/C units. His name is Bernd and his phone number is 938-707-1584. He did good work on my Detroit 6V92 at a reasonable price but I can't comment on his A/C expertise. I'm pretty sure he said he could recharge and repair leaks in a roof A/C very inexpensively.

However, I agree with Dave, it sounds more like a thermostat problem if both A/C's are not working.

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Re: Air conditioning question

Reply #7 – July 01, 2012, 01:41:18 pm

Both of my roof airs have a delay built in. One is a minute or so longer than the other. Suspect it is to spread the start up load to make it easier on the generator or shore power with marginal amperage/long electrical runs.

Pierce

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Re: Air conditioning question

Reply #8 – July 01, 2012, 03:47:01 pm

The delays are a very good idea, they prevent the compressors from trying to start against high head load.  This can happen when the power blinks or someone is hamfisted with the thermostat. 

Chuck

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Re: Air conditioning question

Reply #9 – July 02, 2012, 07:36:34 am

Yes it is a two min delay in the newer units.  Surprised me when I first replaced them.

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