View Full Version : Converting manual thermostat to digital progamable
gunner777
Nov 3, 2007, 04:04 PM
I'm converting from a honeywell sub base Q539A1014 to a honeywell RTH230B please help tell me where to put wires
old thermosat: R=red
W=white thread
B=red thread
Y=white
G=gray
O=Blue thread
new thermostat has: rh rc w y g
please tell me where to put my wires on new thermostat. Thanks
hvac1000
Nov 3, 2007, 04:14 PM
Go here first and follow the directions
http://customer.honeywell.com/techlit/pdf/69-0000s/69-1800.pdf
Next go to the sticky notes in the front of this board and see if the others are listed.
I can tell you now that your original thermostat was not wired with the correct color code and you might have to trace the wires back to the furnace to tell exactly where they go.
gunner777
Nov 3, 2007, 04:33 PM
im converting from a honeywell sub base Q539A1014 to a honeywell RTH230B please help tell me where to put wires
old thermosat: R=red
W=white thread
B=red thread
Y=white
G=gray
O=Blue thread
new thermostat has: rh rc w y g
please tell me where to put my wires on new thermostat. thx
I know that the color code is not correct but that is what I have and I was hoping that someone might be able to tell me how the 2 thermostats convert to one another... I have tried looking at funace to see where wires go and go nowhere with that. Was hoping that maybe somebody could use the terminals of the old therm and use that info to tell me how to wire up the new one.
hvac1000
Nov 3, 2007, 04:49 PM
Go to the sticky notes in the front of this board and see if the others are listed. It lists different color codes there
labman
Nov 3, 2007, 06:21 PM
While at the sticky see ''Do I have a heat pump?''. The O on the old thermostat suggests you might. If you do, you may need a different thermostat if the directions do not say how to hook up a heat pump.