Copied this from IRV2 Search on Carrier AC; This was a very knowledgeable post. #4 wa8yxm
Workhorse Chassis Owner
Damon Owners Club
Join Date: Mar 2009
I have heard that on the forums.. I have a pair of Carrier
V's.. This I will say..
Save for the "mother board" (Control board) there is nothing in that or any other air conditioner that is unique to that brand (or any brand) an air conditioner consists of several parts.. Other than the control board there is a fan/blower motor, this is an off the shelf at any motor supply and can also be re-built by a motor rebuilder very easily.
There is a compressor, again this is an off the shelf at a refrogeration supply
A condenser and an evaporator,, Some tubing and such, All these parts are generic though the condenser/evap unit may be a custom size (you may have to do some metal work to get one to fit)
The only thing that is unique to any given make and model is the control board and the outer housing.
When it comes to RV-Air conditioners they have another thing in common. The hole in the roof is a 14" square, (14" by 14") again, the brand does not matter.
Finally we get to the electrical connections.... There are basically three sets of electrical connections.
1: 120vc.. This is common to all brands.. basic White, black and green/bare (Neutral hot and safety ground) all the same, no difference brand to brand
2: (Optional) 12vdc, Carrier
V uses this, not all models do.. if you don't need it, cut the wires and tape, heat shrink or wire nut (And tape) the ends, I like the wire nut with tape myself (Belt and suspenders)
3: (Also optional) Thermostat. The Carrier
V has 2 wires (Blue) which control the furnace,, Most A/C's have two or more wires that control the A/C from a thermostat located elsewhere.. SOME the controls are all built into the insider cover and these have NO thermostat wires of any kind..
IF you have a Carrier
V you can go with the "No remote" type, and then put in a common T-Stat for the furnace (you will have to figure out where to splice that device in) just cut and tape the blue wires.
Other types.. Well, if you have a multi-wire T-Stat, it will still control the furnace and so long as you need the same wires for the A/C (Usually a temp sensor and 1 or two fan wires) with the new one you are good again.
IN short, even if they don't make them any more.. It should be easy to replace it with a different make.
Home is where I park it!