Dometic 4 Button Control Systems were used by many RV Mfg from '96-03 ish until  5 Button. NOTE: IF this is the date range. You are in luck. Send me your thermostat.  Hendrix RV Services 937 Quarry Circle Erie Co. 80516.

$180.00 I will REPAIR & 100% bench tested to a fully functionally used thermostat, with a 2 year limited warranty. Standard repair incl- all 4 button switches, ON/OFF. I will send back all your parts...

NOTE: On the occasion, the switches don't cure your problem...  There will be additional charges if repairable. TBD

Eric 303-718-6624