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

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

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

Rectify the problem if alarms or faults are found.

Check the presence of strainers

Is there any visible debris on the strainers?

Ensure all strainers are properly reinstalled

Is there a performance degradation not explained by a refrigeration circuit problem or low loop flow rate?

Flush heat exchanger with a lime removing solution

Is the system performance restored?

Pump down the unit as per the Pumpdown Procedure

Was there a compressor burn out (motor failure)?

Remove crankcase heater, leaving it electrically connected

Replace the liquid line filter-dryer