I have a chillaire rooftop air conditioner on our rv,13,500 model 714.it will come on but only makes a hmmm noise.must not be a breaker or fuse but was told it could be a start compasiter.any other suggesstions?unit is on a 1984 motor home so it is all old but has run very well until now.thanks

I don't see why you should have any problems as long as you don't exceed to current supplied by the circuit breaker, and since your basically not going to be drawing much more current from your 13.5K unit to the 15k unit I would say that you should not have any problems.

If your happy with my suggestion would you kindly rate me.

Good luck,

Marty

read the data plate it should tell you.

It may be to small of a unit.

it sounds like no communication from stat to board. cable connections

Check for a tripped breaker inside breaker box. A/C outdoor units are on seperate breakers than furnace.

to run this air condition u have to have at least 15 amps 20 amps recomened

When you say loud, do you mean as in airflow noise, or vibration like noise? I take it this is a ducted system as well. Does it have quik cool option on ceiling assy.?

If you are 100% sure the wiring is correct,,
It might be the capasitor..

change out the tstat

Checked all breakers & fuses in panel ?