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How to Install and Remove a Mainboard from Genuine Comfort Unit

  • Updated

This article shares the steps to remove the mainboard from our units. The same concept can be applied throughout our units.

Prestige Series 42" 

 

GCDM Series 32" 

Tools Needed: 

  • Phillips-Head Screwdriver
  • Phone to take a photo of the wiring before removing the mainboard

Important Notes Before You Begin:

  • Ensure the PTAC unit is disconnected from all power sources.
  • Use proper safety precautions to avoid injury, such as wearing protective gear (if needed).

Steps to Remove the Mainboard from a PTAC Unit:

1. Access the Mainboard

  • The mainboard is located below the display of the unit. Remove the display board and unscrew the panel below. This will allow access to the mainboard

2. Remove Components Blocking Access

  • You will need to remove the harness on the mainboard for the display board. This would allow ease to remove the mainboard without the display board loose.

3. Disconnect & Plug Electrical Connections: into the Replacement 

  • Take a couple of photos of the mainboard with the connections. This will allow a smooth unplug and re-plug. Commonly if this step is not completed, it causes incorrect wiring and will not allow the unit to call for heat or cool.
  • Carefully disconnect electrical connections and wires attached to the mainboard. This includes wiring to the relays, sensors wires, etc.
  • Important: As you remove one wire at a time, be sure to place the wire directly onto the new mainboard. 

4. Detach the Mainboard

  • After the wires are disconnected, the remaining part is to remove the mainboard. You will see white pins on each corner of the board. Pinch to release the mainboard and you will see each corner lift up. 

5. Lift out the Mainboard

  • Gently lift the mainboard from its mounting points. 

6. Replacement

  • Since each wire was placed as it was removed from the old mainboard, the only step is to snap in each corner of the mainboard into the white pins. 

7. Reassembly

  • When reassembling the PTAC unit, follow the reverse of the removal steps, making sure all connections are secure and components are properly positioned.

Awesome! You should pat yourself on your shoulder, you safely removed and replaced the mainboard on your unit. Feel free to reach out if you have any further questions or concerns at technical@genuinecomfort.com.

 

803300301100 - F series Mainboard - PCB.png

803300301100 - GC F series Mainboard 

 

*Please note, the mainboard part colour, size, shape, etc. may differ over time. However, the functions of the mainboard are exactly the same and compatible with our units.