No cold cab air and no cold roof airs ( both )
The fans work fine.
Just need charging or more serious problems?
Don
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.
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?
Year is a 2000 U270.
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
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
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.
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
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
Yes it is a two min delay in the newer units. Surprised me when I first replaced them.