Replacing a White Rogers thermostat
#1
10-13-13, 09:39 AM
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Location: USA
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Replacing a White Rogers thermostat
Trying to replace a W-R 1f56-301 thermostat with a honeywell RTH8580WF. Wired as follows:
W-R/Honeywell
G/C
Y/Y
W/W
R&RC/R
T-stat went to blink mode (about every 8 seconds) called Honeywell and was told to make the following changes on the furnace control board:
Move G to C
Jumper Y to G
Any help would be GREATLY appreciated!
G-D
W-R/Honeywell
G/C
Y/Y
W/W
R&RC/R
T-stat went to blink mode (about every 8 seconds) called Honeywell and was told to make the following changes on the furnace control board:
Move G to C
Jumper Y to G
Any help would be GREATLY appreciated!
G-D
#3
10-13-13, 10:14 AM
Member
For the fan to operate you need to have a wire to the G terminal. Normally it would be wired like this:
Red wire: R/RC (jumpered)
Green wire: G terminal for fan operation
Yellow wire: Y terminal (compressor operation)
White wire: W terminal (heat operation)
????? : C terminal this provides constant 24VAC to power thermostat
What ever wire was connected to "C" terminal on old thermostat needs to go on the "C" terminal on the new thermostat. If you don't know which wire that is, look at the furnace control board and see what color wire is on the "C" terminal. That same color wire will go to the "C" terminal on the thermostat. That holds true for all the wires. Match wire colors at control board to thermostat. You may need to go into set-up menu to configure thermostat to your system.
Red wire: R/RC (jumpered)
Green wire: G terminal for fan operation
Yellow wire: Y terminal (compressor operation)
White wire: W terminal (heat operation)
????? : C terminal this provides constant 24VAC to power thermostat
What ever wire was connected to "C" terminal on old thermostat needs to go on the "C" terminal on the new thermostat. If you don't know which wire that is, look at the furnace control board and see what color wire is on the "C" terminal. That same color wire will go to the "C" terminal on the thermostat. That holds true for all the wires. Match wire colors at control board to thermostat. You may need to go into set-up menu to configure thermostat to your system.
#7
10-13-13, 10:44 AM
Member
Ok, I understand. As I posted earlier look at the furnace control board and see if a wire is connected to the "C" terminal there. If so, whatever color wire that is find it in the thermostat wire bundle at the thermostat and connect that to the "C" terminal there. If you don't have a wire connected to "C" terminal at the furnace look for a wire not being used in the thermostat wire bundle. Use that wire to connect to the "C" terminal at both ends. If you don't have any unused wires you will have to pull a new wire from furnace to thermostat as a "C" wire is required for your new thermostat.
