Pace Arrow Air conditioning

[justintime]

I have a 1991 Pace Arrow and my bedroom air is not working I found the Black hot wire must be broke or loose from switch in cabinet to air in rear somewhere, print shows a junction box before it goes to air condition unit does anyone know where this box is help Please

[clyon51]

They are usually right at the AC unit, under the interior ceiling cover.

[justintime]

yes there is that box and it shows another one also

[clyon51]

Have you checked for 120v at the breaker and at the AC unit? This could be a 12v control problem.

[justintime]

I do not have 120v to Ac the black wire going to unit is broken or disconected between the switch and the AC

[clyon51]

Originally Posted by justintime

I do not have 120v to Ac the black wire going to unit is broken or disconected between the switch and the AC

Ok, I assume this "switch" is the circuit breaker in the main 120V panel? And you believe there is a junction box between that panel and the junction box that is located right at the A/C?

If this is correct, it would be highly unusual to have a secondary junction box as that breaker is dedicated to the A/C unit and nothing else. Of course with a 30+ year old coach, any PO could have changed many things. If you do have a secondary box, I wouldn't know where it would be. You may have to use a wire tracer to find it.

Since this is a second A/C unit and assuming you have a generator (where it's 20amp circuit is dedicated to the rear A/C), have you tried the rear A/C with the generator?

[justintime]

Ok I have a 2- single pole 20 amp breaker in the panel one for each AC and a switch in cabinet behind drivers seat that tuens on power to front or rear AC Front AC works fine rear Ac doesn't have continuity on the black wire. White and ground wire are fine. The print I have shows a J box before the air I can not find that box.

[clyon51]

I would suspect a problem with that rear A/C switch. If you have power leaving that switch, then of course you have a problem elsewhere. I've never used one, but a wire tracer should lead you to the problem area where you have a loose or broken wire. Good luck.