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To perform a pump down on a package heat pump, first, ensure the system is turned off and isolate it from the electrical supply. Next, connect a refrigerant recovery machine to the service ports, starting with the suction line. Open the service valve on the suction side and let the refrigerant flow into the recovery machine until the pressure gauge indicates it has reached a low level. Finally, close the service valve and disconnect the recovery machine, ensuring the system is sealed properly.

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3w ago

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Can you pump down a heat pump system in heat mode just as you would do in the cool mode?

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