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Old 10-30-2011, 09:57 PM   #1
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Heating/Thermostats


I have an old Wesco Electric Furnace and have taken the old Honeywell Thermostat from the wall, (forgot to mark the wires) and and trying to get a new Honeywell programable thermostat to work. I have four wires, blue, yellow, white and red. Any help?

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Old 10-30-2011, 10:08 PM   #2
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you need to open the furnace and find what color wire goes to what terminal in the furnace. There is no "universal" color code as to what color goes to what terminal. It all depends on the installer.

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Old 10-31-2011, 01:51 AM   #3
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OK, so there are three wires that go to a terminal block with letters on it, the fourth wire goes to a fan switch, the letters on the terminal block are T, F, Hi, V and C. The wires go to the T, Hi, and V terminals. Can you tell me which wires go to which terminals on the thermostat?
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Old 10-31-2011, 06:18 AM   #4
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Need a make and model number
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