Hi,
I have Honeywell programmable thermostats (rlv430) on all my baseboard heaters and all of them work perfectly except for one. No matter what I program, it always sets itself to "manual, 20 degres". When I set it to "auto" it just switches right back to manual. I had a look at the wiring and it looks just fine, any idea what could be wrong here?
Thanks a lot!