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Old 07-22-2019, 05:54 PM   #21
Snoopy
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ac issue

on our way to coos bay in very hot las vegas on 15k ac would not come on. It seems that it had lost all of it's coolant. was replaced by dometic under there 2 year warranty.

2019 F350 6.7l lb
2018 mHC 331rl
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Old 08-01-2019, 07:56 PM   #22
navybanker
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Dealer fixed the problem saying it was the wiring "harness" to the AC unit. Unit is okay and working. Apparently, the harness is the six wire connection supplying power and communication with the thermostat. You could move the harness and ac would work. Move it again and it wouldn't. Bad connections. My explanation not necessarily what the tech said. He also said the wiring from the factory was a mess! They cut the wires and redid the harness connections. Extended warranty paid for it. So, hopefully am on to loading for our trip. Thanks for your input.
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Old 08-13-2019, 03:58 PM   #23
GYPSY SOUL
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Having the same exact problem with my ‘just off the lot 331RL’
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