Maritime Geothermal Compressor W-235-H-P-2S-PP-01

Are there any alarms or faults displayed on the LCD interface?

Rectify the problem if alarms are found

Connect the vacuum pump to the charging manifold

Start the vacuum pump and open the charging manifold valves

Monitor the vacuum gauge until it remains at less than 500 microns for at least 1 minute with the vacuum pump valve closed

Close the charging manifold valves

Shut off and disconnect the vacuum pump

Place a refrigerant tank with the proper refrigerant on a scale and connect it to the charging manifold

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

Disconnect the display board cable connector from the control board

Remove display board standoff heads

Extract the display board from the unit

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

Install new display board standoffs

Connect the display board cable to the new display board

Position the display board and align standoffs

Place the unit in SERVICE mode via the PC App or LCD interface

Ensure electrical power is not turned off at the breaker panel

Connect the refrigerant recovery unit to the heat pump’s internal service ports via a refrigeration charging manifold and to a recovery tank

Plan to dispose of refrigerant if there was a compressor burnout

Ensure refrigerant to water heat exchangers have full flow or are completely drained of fluid

Start circulation pumps via building control system if necessary

Ensure all hose connections are properly purged of air

Start the refrigerant recovery as per the instructions in the recovery unit manual