Originally Posted by ependydad
I thought that even this one can't be replaced. There's some Dometic special madness to it. But, I could be wrong.
As long as the OP is only controlling 1 A/C and the furnace any programmable Honeywell will work. Need to check the terminal wires. Most will use these colors.
Now he will only get low or high speed fan with the A/C unless he puts in a toggle switch. Pull the R/A where the control board is located if it's terminals write them down. If it is a plug in terminal board, get back to me after you cut the plug off. I get it wired for you or should I say tell you what to try...Wheres the flag today...