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UV lights in both HVAC and water purification systems should be changed yearly. This is also in the Honewell spec sheet for the UV2400: Lamp should be changed 1/year or every 9000 hrs to maintain its effectiveness Many systems have a timer and will start beeping and/or flashing a light after 1 year to remind you to replace them. It's not that ...


The Honeywell video describes the process, when the thermostat is used to control a forced air furnace. Since your situation is different, this may not work for you. If you want to try it, you should proceed as follows... Disconnect the green wire in the second photo from the G terminal, and connect it along with the white wire to the C terminal. At the ...

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