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Nest Thermostat E Motherboard Replacement

Introduction

Replacing the thermostat motherboard on your Nest couldn't be easier. The only tools required are tweezers, a Phillips #0 screwdriver, and the opening tool.

What you need

  1. Nest Thermostat E Motherboard Replacement, Base Plate: step 1, image 1 of 1

    • Grasp the display's outer ring with your fingers and pull directly away while rotating clockwise to remove the thermostat from the wall.

    • Go to the electrical panel and turn off the circuit to make sure no power is running to the thermostat.

    • Once the power is off, disconnect the Y1, G, R, W1, C, and OB wires.

    • Remember the placement of each wire for reassembly.

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  2. Nest Thermostat E Motherboard Replacement: step 2, image 1 of 1

    • Remove the two 1 ¼” drywall screws holding the base display and base plate in the wall using a Phillips #2 screwdriver.

    • Remove the base plate and base display.

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  4. Nest Thermostat E Motherboard Replacement: step 3, image 1 of 1

    • Pry the base display off of the baseplate using an iFixit opening tool.

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  5. Nest Thermostat E Motherboard Replacement, Motherboard: step 4, image 1 of 1

    • Remove the four 6 mm screws using a Phillips #0 screwdriver.

    • The two smaller screws go around the pin connector and the two larger screws go by the outside bezel.

    • Grab the pin connector and pull up to remove the thermostat backplate from the thermostat.

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  6. Nest Thermostat E Motherboard Replacement: step 5, image 1 of 2 Nest Thermostat E Motherboard Replacement: step 5, image 2 of 2

    • Flip the base display over and the display motherboard will remove itself from the display.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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