I have a Class A and need to replace the A/C for the bedroom. It runs for maybe a minute then pops the beaker. The unit is clean and I think I need to replace the air conditioner. The motor home is a 1997 Damon Intruder 32 ft. So do I just buy a A/C unit and replace or do I need to match the A/C to the room controls? I plan on buying a 13,500 BTU unit. Will any one work with the controls that came with the motor home? Thanks

That problem happened with my ac. It turned that the fan under the cover on the roof had come lose. Tightened it and the price blemish was fixed. Worth checking before replacing.

Most AC units consist of upper and lower components. I had to change out a upper AC section due to the loss of a compressor once. I bought the upper unit of the same brand and size, removed 4 bolts clamping the faulty unit to the roof, then unplugged lower unit. Replaced the upper unit with new foam roof gasket, plugged in harness and replaced bolts. I had a neighbor with a forklift to raise and lower the AC unit, which made the job easy.

I would check the amp draw first. You could have a bad breaker.

You need to match. If controlled by a thermostat on the wall then get one controlled by a thermostat on the wall. It could be one with controls mounted on the unit then match that

Replacing roof A/C unit | Good Sam Community

13 Replies

Keith_Smith
Explorer
Jul 21, 2017
Add a Supco SPP6 hard start capacitor. There was a post on it, so watch for hard start capacitor. I added one in less than 30 minutes for under 30 dollars. Took care of my AC issues.
jjrbus
Explorer
Jul 15, 2017
twainharteartist wrote:
billyboy wrote:
Check and replace the start capacitor
I called an RV company and they say my A/C (1997 Coleman)is too old and they don't make a replacement capacitor any longer. That doesn't sound right to me. Capacitors as far as I know is a capacitor and as many as there are out there I would think there would be one that I can buy for it.

Coleman may no longer stock that part #, a minimum wage guy at an RV shop is not going to know much. Remove it an take it to any HVAC place and they should be able to match it up.
Dusty_R
Explorer
Jul 14, 2017
twainharteartist wrote:
billyboy wrote:
Check and replace the start capacitor
I called an RV company and they say my A/C (1997 Coleman)is too old and they don't make a replacement capacitor any longer. That doesn't sound right to me. Capacitors as far as I know is a capacitor and as many as there are out there I would think there would be one that I can buy for it.

That's like saying a new car will not fit your driveway.

Dusty
twainharteartis
Explorer
Jul 14, 2017
billyboy wrote:
Check and replace the start capacitor
I called an RV company and they say my A/C (1997 Coleman)is too old and they don't make a replacement capacitor any longer. That doesn't sound right to me. Capacitors as far as I know is a capacitor and as many as there are out there I would think there would be one that I can buy for it.
billyboy
Explorer
May 20, 2017
Check and replace the start capacitor
twainharteartis
Explorer
May 20, 2017
Thanks guys for your reply's
lj2654
Explorer
May 20, 2017
I just had my Dometic unit replaced as it had quit. Bad compressor. Only the upper unit had to be replaced. I had a mobile RV service come out to do it.
Ivylog
Explorer III
May 20, 2017
Without know more about the brand of AC it hard to advise. If it's a Dometic the 5 button Tstat will not work with a newer unit without an adapter board.
darsben1
Explorer
May 20, 2017
You need to match. If controlled by a thermostat on the wall then get one controlled by a thermostat on the wall. It could be one with controls mounted on the unit then match that
Toddupton
Explorer
May 20, 2017
I would check the amp draw first. You could have a bad breaker.

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Replacing roof A/C unit

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