Bad AC noise and no zone 2 cooling

[OregonTravel]

I thought I'd try the cooling functions while the coach is parked in our driveway and the temperatures are rising to the 80s and soon into the 90s.

I set zone 1 to cool and 70 degrees setpoint. The ac kicked in and the unit sounds fine and cold air blows out of the outlets. Then I set zone 2 the same way and that unit, the rear most, sounds like it is rattling and I'm not getting cold air blowing. It's rattling so loud I can hear it from the road and I have a pretty long driveway.

I'd love to hear ideas about what is wrong and what I have to do to get it fixed.

TIA

David

[wolfgolden]

Might be the fan blades (squirrel cage fan) may have broken apart.
Visual inspection would confirm.

[Capt. Bill]

I would go up on the roof - take the cover off & inspect it.

Happy Trails

[bevandtomH]

Unfortunately, if it is a Coleman Mach, the squirrel cage hangs a single spindle. You can easily tighten it and the compressor fan while you are up there.
You will need a Torx to remove the ac cover( at least on mine), a small socket with extension to remove the cover protecting the squirrel cage.
You will also need a Phillips or flat blade too.
Might need a small roll of foil tape if the old tape is compromised.
When I’m on the roof, I use a small bucket with tools and hoist it up with a line. THEN I have DW throw stuff up when I forget stuff
Replacement parts are available on Amazon.

[NCC-1701A]

Agree with the prior two posts. The unit needs to be inspected to find the source of the noise and get it corrected. With no air coming out, I would also suspect the squirrel cage.

[xbcsutter]

One of my Dometic A/C’s quit and made a horrible noise. Sounded like someone shoved a stick in the fan and no air movement. It was a bad condenser. Both fan and compressor on Dometics have a start condenser. Condenser was visibly swollen. Less than $100 fix. I posted a thread regarding the repair here. Hope it’s a similar quick fix for you.

[whem2fish]

I think you mean a capacitor

[OregonTravel]

I appreciate the suggestions and insights. I have not had a chance to defy injury to life and limb by climbing on the roof yet.

The unit is a dometic penguin. A detail I omitted earlier.

and how do I find the repair thread mentioned by xbcsutter? I'm no expert in AC work but I usually do ok following instructions.

[xbcsutter]

Originally Posted by whem2fish

I think you mean a capacitor

YES, Capacitor. Thanks for the correction.
Picture shows failed, swollen capacitor and new one.