Maritime Geothermal Water-to-Water Heat Pump W-100-W-P-2S

Take a picture of the control board and connectors for reference

Remove all green terminal strips from the left, right, and bottom of the control board

Remove the red six pin display board connector from the left side of the control board

Remove all connectors from the top of the control board

Detach the control board from its four corner standoffs

Remove any remaining standoffs from the old control board

Remove the new control board from the static bag and place old standoffs on it

Align and snap the new control board into the four corner standoffs

Remove the display board cable connector from the control board

Slice each of the display board standoff heads off using a sharp utility knife

Pull the display board from the unit

Remove the display board cable connector from the back of the display board

Place a new display board standoff into each of the four holes in the cabinet

Pump down the unit as per the Pumpdown Procedure

Was there a compressor burn out (motor failure)?

Remove crankcase heater, leaving electrically connected

Replace the liquid line filter-dryer

Are there any alarms or faults reported on the LCD Interface or PC App?

Rectify the problem if any alarms or faults are found.

Ensure all alarms are cleared after rectification.

Confirm that the system is operating normally after rectification.

Check for presence of strainers

Inspect strainers for debris or blockages

Ensure strainers are reinstalled correctly