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STEP1
Take your Electric Control Module ,wire labels, tools, your smart-phone, and go to
your HVAC system.
Thermostat wire labe
Label wires at your:
STEP2
Open your HAVC system’s cover to
reveal at control board.
STEP3
Take a picture of the wires
connected to your control board.
You may need to reference this
photo later on.
HVAC system contain high voltage wires. Use caution when working with the
control board. If you’d rather leave it up to a professional.
WARNING:
！
Cont ro l bo ar d
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4140
A1
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