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View Full Version : Going from old to new


Ashley40342
Nov 20, 2007, 03:06 AM
I just bought a new honeywell programmable thermostat RTH230B. I had a old murcery switch thermostat it had red,blue,green,orange,white,and yellow wires in use I only have 5 places for the wires to go and I I'm not sure were to put the wires the new one has RH,RC,W,Y,C inputs what wires go were.

labman
Nov 22, 2007, 07:21 PM
I am afraid you have a heat pump, and that thermostat won't work with it. See https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html
Plus the instructions for the thermostat.