RV Comfort ZC Thermostat problems
Ok I have read all the advise on this remarkable product. My thermos is a ak7807h in a 2003 Discovery. Worked fine until last few trips. Locks up in Zone 1 or Zone 2 or does not recognize Zone 1. Heaters came on in Zone 2 and after about a half hour (or longer) Zone 1 Wednesday night. Thursday night can't get any heat and thermo locked. Pulled fuse, held buttons as suggested in other posts no go.
Any thoughts, this thing has worked fine before but been shaky in the last year or so.