Hello everyone. I have an older M1M on the board in the furnace it only has four connectors and connections:
C (Blue wire)
W (White wire)
G (Green wire)
R (Red wire)
The older thermostat had the following connections:
R (Red wire)
W (White wire)
Y (Blue wire)
G (Green wire)
I tried one for one when installing the Honeywell T9 matching what was connected at the furnace circuit board:
C (Blue wire)
W (White wire)
G (Green wire)
R (Red wire)
With this setup I'm able to engage the heating, and fan. I'm unable to get the A/C unit to engage. I have the C wire adapter, but do not see a location on the circuit board to connect the Y wire. Any assistance is greatly appreciated in helping me get this sorted out.
Thank you in advance,
Chris
C (Blue wire)
W (White wire)
G (Green wire)
R (Red wire)
The older thermostat had the following connections:
R (Red wire)
W (White wire)
Y (Blue wire)
G (Green wire)
I tried one for one when installing the Honeywell T9 matching what was connected at the furnace circuit board:
C (Blue wire)
W (White wire)
G (Green wire)
R (Red wire)
With this setup I'm able to engage the heating, and fan. I'm unable to get the A/C unit to engage. I have the C wire adapter, but do not see a location on the circuit board to connect the Y wire. Any assistance is greatly appreciated in helping me get this sorted out.
Thank you in advance,
Chris