Nest, 2 Stage Heater, Single Stage AC, rewire and repair

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$250

Furnace used a Honeywell IQ board that began to fail and stop heating my home in the winter. After a few weeks of studying I came up with this wiring diagram. I decided to replace the IQ board and Honeywell Thermostat with a Nest to continue my home automation set up. This was not an easy task as I needed to pull new wire for the Thermostat, Humidifier, and other components. It was a rewire almost from scratch. I used 8 wire Thermostat wire from Amazon, Purchased the Nest on sale from the power company and the relay from Amazon as well.

Furnace used a Honeywell IQ board that began to fail and stop heating my home in the winter. After a few weeks of studying I came up with this wiring diagram. I decided to replace the IQ board and Honeywell Thermostat with a Nest for home automation

Finished labeling my wiring diagram

Before my rewire

Study the Furnace Diagram

IQ board failing and shutting off my heater in the winter

Thermostat only has 4 wires and is only using 3 for data communication between the Thermostat and IQ board.

Lazy contractor wiring no Fan or protection done.

New Wiring for the TrueSteam Humidifier..... Wired the right way!

Nest is working... Need a little drywall touch ups in the coming days but its all tip top!

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