i am installing honywell thermostat rth111/rth221 old thermostat only has two wires red and white new thermostat has terminals marked Y,G,Rhand Rc with jumper,W. where do I connect red wire?
I bought a Honeywell programmable thermostat RTH2310 to replace my 10 year old Honeywell thermostat....
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I bought a Honeywell programmable thermostat RTH2310 to replace my 10 year old Honeywell thermostat. My old thermostat is a 4 wire system but also has a jumper from Y to 1. New system does not tell me what to do with the jumper (red) wire that goes from Y to 1 (I believe it to be for A/C). The thermostat is for gas heat and central a/c. Where does the "red" jumper cable go in new rth2310?
My Thernostat is honeywell CM921 wireless programmable. The time on it wasn't changing and therefore...
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My Thernostat is honeywell CM921 wireless programmable. The time on it wasn't changing and therefore the heating wasn't switching on. So when i set the time right the tempereture is displayed as -24 and now a spanner simbol saying internal error. Can you help me with this?