I promised my wife a new fancy LCD thermostat so I went out and bought a Lennox ComfortSense 7000 (since I have a Lennox HVAC system) to replace my Honeywell Chronotherm III.
My problem is that when I removed the Chronotherm from the wall, I discovered that my home only has a 4 wire configuration to run my HVAC system: Red (R), Blue (Y), Green (G), White (W). I tried to use the same configuration with the ComfortSense thermostat but it would never power up. I used the following configuration Red (R), Blue (C), Green (G), White (W) and it powered up, but wouldn't cut on my AC compressor.
When my wife finds out that I bought an expensive thermostat that can't even cut on the AC she's probably going to want to kill me.
What can I do?
The ComfortSense has the following wire terminals:
- C (Common 24 Vac)
- Y1 (1st stage heating or cooling)
- Y2 (2nd stage heating or cooling)
- B (Heat Active reversing valve)
- O (cool active reversing valve)
- W1 (1st stage heating)
- W2 (2nd stage heating)
- G (Fan Relay)
- R (24 Vac Power)
My problem is that when I removed the Chronotherm from the wall, I discovered that my home only has a 4 wire configuration to run my HVAC system: Red (R), Blue (Y), Green (G), White (W). I tried to use the same configuration with the ComfortSense thermostat but it would never power up. I used the following configuration Red (R), Blue (C), Green (G), White (W) and it powered up, but wouldn't cut on my AC compressor.
When my wife finds out that I bought an expensive thermostat that can't even cut on the AC she's probably going to want to kill me.
What can I do?
The ComfortSense has the following wire terminals:
- C (Common 24 Vac)
- Y1 (1st stage heating or cooling)
- Y2 (2nd stage heating or cooling)
- B (Heat Active reversing valve)
- O (cool active reversing valve)
- W1 (1st stage heating)
- W2 (2nd stage heating)
- G (Fan Relay)
- R (24 Vac Power)
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