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House A/C unit
I have been going through everything on my new to me 1999 H3 Vantare and have run into a road block. My house HVAC unit does nothing. The A/C, heat, or fan will not come on. I have no converter manuals. The only tests I have made are at the unit itself I have 120V both at the top and bottom of the power strip. Looking at the schematic of the thermostat I was able to see the 12V + and – lines. There is 12V coming into the stat. I jumped the 12V+ to the GH and then the GL terminal thinking it would power up the fan but no luck. BTW, knowing it may take a while to do anything, I held the jumper for about 90 seconds. It seems strange that none of the functions work. I hope someone has an idea because I’m sure the local HVAC people won’t crawl into this tiny space. Thanks in advance, Cliff
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10 Replies
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Have you checked your breaker panels to verify that curcuit is live ?
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Big Al, my guess is the CBs are on because of power at the unit.
If Ben C is reading this he might jump in because he knows these units.
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Hopefully Ben will jump in…but dollars to do-nuts…circuit board on the RVAC is fried. Geo.
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The breakers are good, I have power at the stat and the board. Cliff
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Cliff,
As George said, it’s probably the circuit board, which is no longer available. On a previous coach, (2001 model), I had the same problem, I took the board to an electronics shop, and they made repairs. It lasted a few months after that, and then, the complete unit had to be replaced because of a bad compressor,(they have 2 compressors). The RVAC units are no longer serviceable, as well as being sealed units with no service valves either.
I then had my whole unit replaced by AAP (Fred Pickering) up in Milford, Va. They did a great job, and I had no more problems after that, and they had the best price. Call Fred at 804-633-9454
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Hello Jerry
We just purchased a 2000 Featherlite Vantare with an RVAC system and no OTR ac. Has difficulty in cooling in a hot enviornment. Im curious what system you used to replaced the RVAC system. I had been told that was not doable.
Ray
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Coleman Mach is the retro-fit. Geo.
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Ray,
Read my post above, Fred at AAP
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Was the unit they installed 15,000 btu? Keeps coach cool?
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I cannot speak about all coaches, but my personal observations for cooling are as follows.
To adequately cool a 40 foot coach in a reasonable time from a hot condition you need no less than 3 13,000 BTU units.
A 45 foot coach needs 4 13,000 BTU units. Both will stay comfortable with 2 units operating if you keep the sun out, and if the coach is not moving. On very hot days……..90 plus you may need 3 units operating. If the coach is moving it becomes very hard to keep it cool because the air moving past the windows tends to wick away the cool, just like the effect of strong winds.
Having said that nobody agrees on the definition of comfortable. My definitiion is if the windows are sweating on the outside, it is comfortable inside.
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