I have two coleman Delta TX 13.5kbtu A/C units on my 88 345 Motor home. I have swapped the control unit (switches and knobs on right hand side of A/C unit) from one AC to the other. The problem follows the control unit. Both AC units blow cold and were fine with the good module installed. The part of the module that does not work is that it won't turn on the compressor. All heat,variable fan, exhaust fan work fine.
If anyone has a module out of there old unit, I would like to get the module. If you know of someone that repairs them either. Please let me know if you have more ideas or modules.
1988 345 Motorhome
1972 31 Excella 500