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Holmes HEH8031 Circuit Board Replacement

Introduction

Repair or replace your Holmes HEH8031 heater circuit board.

What you need

  1. Holmes HEH8031 Circuit Board Replacement, Housing: step 1, image 1 of 1

    • Ensure the device is unplugged from the wall outlet.

    Edit

  2. Holmes HEH8031 Circuit Board Replacement: step 2, image 1 of 1

    • Remove eight 12-mm Phillips #2 screws from the back cover.

    Edit

  4. Holmes HEH8031 Circuit Board Replacement: step 3, image 1 of 2 Holmes HEH8031 Circuit Board Replacement: step 3, image 2 of 2

    • Turn heater over so the controls are facing up.

    • Lift the front housing away from the back of the fan and slowly fold the front housing back down to the floor.

    • Internal wires are connected to both halves of the housing. Be careful when separating the housing.

    Edit

  5. Holmes HEH8031 Circuit Board Replacement, Circuit Board Removal: step 4, image 1 of 1

    • Remove four 12mm Phillips #2 screws from the circuit board.

    Edit

  6. Holmes HEH8031 Circuit Board Replacement, Circuit Board: step 5, image 1 of 3 Holmes HEH8031 Circuit Board Replacement, Circuit Board: step 5, image 2 of 3 Holmes HEH8031 Circuit Board Replacement, Circuit Board: step 5, image 3 of 3

    • Desolder the BLACK wires from the "AC-L" point and "T/S" point.

    • Learn how to solder and desolder connections here!

    • Desolder the WHITE wire from the "AC-N" point.

    • Desolder the RED wire from the "FAN-RED".

    • Desolder the GREY wire from the "24V" point.

    • Desolder the BROWN wires from "HEAT1," and "HEAT2" points.

    • Be sure to use desoldering wick when you remove the wire connections.

    Edit

  7. Holmes HEH8031 Circuit Board Replacement: step 6, image 1 of 2 Holmes HEH8031 Circuit Board Replacement: step 6, image 2 of 2

    • Desolder the WHITE connector (attached to the GRAY wire coming of the thermostat) from the "NTC101" point.

    Edit
Conclusion

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

One other person completed this guide.

Author

with 2 other contributors

Chris Shaffer

Member since: 10/12/16

255 Reputation

2 Guides authored

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Team

IUPUI, Team 2-1, Baechle Fall 2016 Member of IUPUI, Team 2-1, Baechle Fall 2016

IUPUI-BAECHLE-F16S2G1

4 Members

16 Guides authored

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