Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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I have a heat pump with a Honeywell Q674L 1207 thermostat on it. The wiring on the current thermostat is O, G, R, Y, a white wire to W2 which is jumpered to E and a brown wire to X. What is the right configuration to replace the thermostat with the newer Honeywell RTH7600D? Thanks

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What color wires are on each terminal?

Posted on Oct 06, 2010

  • saleitem Oct 06, 2010

    On my current Q674L, it is

    O, G, R, Y, a white wire to W2(jumped to E) and a brown wire to X.

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