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Old 07-14-2019, 03:44 PM   #1
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Rear a/c not coming on when t stat switched to cool

my rear a/c is not coming on?? was working fine yesterday? i must have a
blown fuse as front a/c works fine??

does anyone know which fuse operates the rear a/c? is it a 15 amp fuse?

also where is the location of the rear a/c unit? i appreciate any help.

i tried looking at panel adjacent to entry door and could not find any blown
fuses? thanks again
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Old 07-14-2019, 03:47 PM   #2
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It would be a circuit breaker not a fuse and should be in the main breaker panel.
2004 Beaver Monterey Laguna IV
Cummins ISC 350HP Allison 3000 6 speed
2020 Chevy Equinox Premier 2.0t 9 speed AWD
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Old 07-14-2019, 08:49 PM   #3
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i checked the circuit breaker at the back of my coach and the breakers are not thrown.
thats why i thought it might be a fuse? All breakers appear to be ok> but i will check
the breakers again thanks
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Old 07-16-2019, 10:53 AM   #4
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ok guys

i need a little help here from the electrical gurus. i checked my breaker for rear a/c
#2 in back rear panel of my rv. the breaker is not thrown?? i reset it and i still cannot
get the rear a/c to come on?? what else could cause the rear a/c from not coming on??it worked fine a few days ago and came on and off with no problems? i am stumped.

any help or suggestions is really appreciated. thanks
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Old 07-16-2019, 12:28 PM   #5
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Mr. SeaView - A number of things could cause this - loose AC power connection, bad control board, bad start capacitor, and finally a thermostat. Not familar with National MH, but does it use a 5 buttom Dometic thermostat? If so, then the communication link (i.e. RJ-11 wiring & connectors) is broken. All possibilities which reqiure some techincal 1savy.
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Old 07-16-2019, 04:23 PM   #6
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thanks dutchmaster

but i found mhy problem. it was a blown fuse in BCC compartment. replaced the
fuse and bingo my rear a/c came on.. but i did a stupid thing i tried to run both
a/c at the same time and my microwave oven blew a circuit? i cannot run both ac at
the same time only one or the other unless i change over from 30 amps to 50 amps.

anyway now i am trying to find out how to reset my microwave oven circuit??

does anyone know how to reset the mircrowave oven circuit? neither a/c will work
until i reset microwave oven circuit. thanks for any help in resetting microwave oven
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Old 07-16-2019, 04:37 PM   #7
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microwave is on the main circuit breaker panel 120 volt ac
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
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Old 07-17-2019, 09:43 AM   #8
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thanks for all the help. got my problem resolved, thanks again to everyone,
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