!/[PDF] Wiring Diagram Trane Thermostat Tcont401an21maa

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Wiring Diagram Trane Thermostat Tcont401an21maa. Remove existing thermostat from wall. 2If an existing thermostat is being replaced.

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All you need to do is look us up in the Yellow Pages or write to the address given below. While O is indeed the reversing valve connection they called the common B blue instead of C for Common. Thermostat displays an alert code on the screen.

White W on the old stat goes to W1 on the new stat.

OEM Trane XR401 Non Programmable Comfort Control Thermostat TCONT401AN21MAA Brand. While O is indeed the reversing valve connection they called the common B blue instead of C for Common. 39 out of 5 stars 15 ratings. Cant figure how to connect it into my 6 color existing wiring.