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Old 03-03-2016, 04:20 PM   #1
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A/C

Just got back from 2 month stay in Fla. Noticed several mobile RV repair services replacing roof A/C units. Each one I asked said tech said best route was to change verses repair. Are these units repairable or throw away like TVs today. My 2 are 10 years old and have minor issues.
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Old 03-03-2016, 04:41 PM   #2
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FWIW - I have seen comments from several folks who seem to know that say that the sealed system is not repairable or not economically repairable. The fans and controls probably are if you DIY it.

At least part of that is probably the rate of failure after the first repair combined with the cost of getting somebody to you and diagnosing then fixing something like a fan motor. If you replace a $50 motor it cost you $50. If they do it the price is $50 plus maybe another $25-$50 for stocking the part plus a 2-3 hours labor at $100+ an hour. Then the compressor goes a month of two later resulting in an unsatisfactory issue for all concerned. It's a lot safer for them to do the replace only line once a unit is out of warranty.
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Old 03-03-2016, 05:15 PM   #3
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Just went through this with our zone 2 Heat Pump. Unit quit putting out AC and heat and AMP draw was low. Mobile Tech found a Freon leak in the condenser coil (in house coil). Can't speak for all units, but our Dometic unit Freon system is not designed for servicing AND there was a significant Freon leak in the coil. Now, before the pundits leap on me I KNOW anything is possible... Yes, I COULD cut into the Freon lines and add servicing points and I COULD have a new coil soldered in and then I COULD have the system evacuated and re-serviced with Freon... BUT, is it worth it...??

The fan motor and the circuit board are replaceable, but for me, anything within the Freon circuit is a "Replace the Unit"!
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Old 03-03-2016, 06:26 PM   #4
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I replaced the blower motor on my front unit, it was starting to kick the breaker intermittently and loud. When I pulled it out I found the bearings were almost seized, I could hardly turn the motor by hand. Cost ~$100 to change by me doing it myself. If a shop had to do it ~3 hours labor it may not be worth replacing.

If you develop a Freon leak it will have to be replaced as it is not worth having it fixed.
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