Maritime Geothermal Compressor W-140-H-P-5S-PP-01

Was there a compressor burnout?

Dispose of refrigerant according to local codes

Disconnect piping and remove crankcase heater

Replace the compressor and liquid line filter-dryer

Ensure nitrogen is flowing during brazing

Charge the unit with new refrigerant and operate for 2 hours

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

Check for alarms on the LCD interface

Describe any alarms or faults found

Were any alarms or faults rectified?

Take a picture of the control board and connectors for reference

Remove all green terminal strips on the left side, the right side, and the 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

Remove the control board from its four corner standoffs

Remove any remaining standoffs if they have the bottom snap cut off

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