Search found 7 matches

by jim427
Mon Jul 13, 2020 12:20 pm
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

I've wondered about that as well. Haven't found anything but general info. about it. Pretty much add 1 oz. per major component replaced. I.E. compressor, condenser, evaporator, dryer. But I am certainly no authority. The moderators on this forum will know.
by jim427
Mon Jul 13, 2020 9:02 am
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

Ambient temp was 85-90 F
by jim427
Mon Jul 13, 2020 9:02 am
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

Didn't notice any sounds from the compressor but this is a diesel pusher MH so I was at one end and the compressor at the other. I have not seen any residue or dye either as I also had that in the system. I wondered if there was a pressure relief valve. Makes sense. Thanks again.
by jim427
Mon Jul 13, 2020 6:11 am
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

Thanks for the help. The fan was the problem. My gauges now read 35 low and 225 high and I have cold air. It just happened to fail while I was in the process of replacing the pressure switch and THX, and I had tunnel vision and wasn't looking for additional problems. Looking back on it I do remember...
by jim427
Sun Jul 05, 2020 7:20 pm
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

I appreciate your response JohnHere. Yes this is a 134a system built on a Freightliner chassis. No underhood sticker, but Freightliner said it is a 2.8 lb. capacity system. I only put 38 ozs. in because the pressures were climbing alarmingly high quickly, so I stopped. Yes, it held a 29 Hg vacuum fo...
by jim427
Sat Jul 04, 2020 12:28 pm
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

Re: RV A/C trouble

That's my question. Is it possible they are giving me the wrong valve? If so would that cause the problem I'm having? Are they made for different pressures or other paramaters? All I know is they look the same. My original has numbers on it, but the new ones do not other than the part numbers on the...
by jim427
Sat Jul 04, 2020 10:22 am
Forum: Automotive Air Conditioning Forum
Topic: RV A/C trouble
Replies: 15
Views: 1651

RV A/C trouble

I'll say up front I'm not an experienced A/C guy, but I'm learning. I have an RV that the dash A/C was working when charged with Freon, but had a Freon leak and would leak down pretty quickly. I finally found the leak which was the pressure switch. This was complicated by the fact that the pressure ...

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