Community Forums

Mike Bisson · 08-04-2021, 05:27 PM

I'm newt to this unit. Front AC works great. Mid and aft do not seem to output anything. Not sure if operator error. Any suggestions?

okcnewbie · 08-04-2021, 05:52 PM

Quote:

Originally Posted by Mike Bisson

I'm newt to this unit. Front AC works great. Mid and aft do not seem to output anything. Not sure if operator error. Any suggestions?

The more info you give the better.

Do your mid and aft (often zone 2 and zone 3) turn on at all?

Mike Bisson · 08-04-2021, 08:31 PM

No, not even fans.

barmcd · 08-04-2021, 08:58 PM

You need 120 VAC and 12 DC for them to work. Check the breakers. I'm assuming that if one unit has 12V to it, all three do since both of my AC units get 12 volts from the same place, but it doesn't hurt to check your fuse box. I think your unit should also have a circuit that lets the center AC or washer/dryer run, but not both.

windsorbill · 08-04-2021, 09:43 PM

1. check breakers are on then check for 120 volts with voltmeter
2. Does your washer/dryer work?
3. Depending on how you answer these, I'd suspect your intellitec system.

Mike Bisson · 08-04-2021, 11:32 PM

Washer/dryer do not work either. Where do I check fuse?

gsgriffin · 08-05-2021, 03:08 AM

Might be obvious, but be sure to set the temp as low as it can possibly go in case the compressor is not turning on at all. I've had thermostat problems before.

hypoxia · 08-05-2021, 04:45 AM

Here's your 110 Volt diagram, https://www.irv2.com/forums/download...do=file&id=367
Do you have a voltmeter and have you used one? First thing is to check the breaker panel, mine is above the driver seat and has around 15 circuit breakers in it just like a stick house panel.

I have the wiring diagram book, it is around 240 pages I can send if you PM me.

pduggs · 08-05-2021, 05:23 AM

Likely need to reset breakers in electrical panel.

Are you hooked up to 50 amp? If not, you don’t have enough power to run all three AC units.

You can’t run the dryer and the rear AC simultaneously, even on 50 amp. They are on the same circuit, in my coach. When running dryer, shut off rear AC and run the other two. You will still get some cool air in the bedroom from the overhead ducts.

You should make sure the AC filters are clean. They need cleaning at least once a year if not more based on usage.

Make sure your ACs are draining. The condensate drains for the two front units are in front of the driver’s tire. Rear AC drain line is near driver’s side rear bumper. These drain lines can get clogged with debris or mud dubbers. You should see moisture on the ground under these areas after the ACs have run for awhile.

YC1 · 08-05-2021, 06:43 AM

Welcome to the forum:

What power source are you using? That is, what are you plugged into??

If you are on a 30 amp source or smaller it could be "load shedding". That is, actually cutting those circuits off because you do not have enough power.

Each AC likely will have its own breaker in the circuit breaker panel.

Just how new is the RV to you? Do you have the owners manual?

Reading the owners manual may be a drudge but I promise you there will be a test so study hard. Take notes and then read the manual again in a week or so and then refresh your memory by reading it again.

You don't want to be tested some rainy night, on a steep hill with no pullout area, or worse. But you will be tested for sure and the more you understand the RV systems the quicker you can get through those blood pressure raising events.

Been there, did that for sure.

Here is an example of how the AC's are powered.

Shoreline in, through transfer switch, to AC breaker box, jumps over to "load shedding relays in said box, then on to the AC units themselves.

windsorbill · 08-05-2021, 07:58 AM

Quote:

Originally Posted by Mike Bisson

Washer/dryer do not work either. Where do I check fuse?

There are no fuses. You need to check the circuit breakers however. Turn them fully off, even if they look like they are on, then turn them on.

Then report back your findings.

Do you know how to use a voltmeter?

Give us a little information on your abilities and comfort level? Some of the things being suggested can be very dangerous if you are not comfortable around electrical.

vito.a · 08-05-2021, 10:08 AM

Good info above. I'll add some extra points. After resetting the circuit breaker or turning the thermostat on, it takes up to 5 min before the A/C will start.
Additionally, there is a hidden black switch on the underside of each thermostat. Slide these forward to make sure they are on.
On a 2006 model, usually the middle A/C and the washing machine share a 20A breaker. Make sure the washer is off.

barmcd · 08-05-2021, 12:32 PM

Quote:

Originally Posted by vito.a

Good info above. I'll add some extra points. After resetting the circuit breaker or turning the thermostat on, it takes up to 5 min before the A/C will start.
Additionally, there is a hidden black switch on the underside of each thermostat. Slide these forward to make sure they are on.
On a 2006 model, usually the middle A/C and the washing machine share a 20A breaker. Make sure the washer is off.

All good info. We changed the bedroom AC unit this last March. After wiring everything up, it wouldn't come on. Panic set in and it took a few minutes to recover sufficiently to realize it was only about 60 degrees ambient and the thermostat was set to 68. We cranked it down as far as it would go and it came on after a couple minutes.