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Only for training and service purposes
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■ Ending condition
1) All Heat exchanger pipe temperature are above 15˚C for 30 sec.
2) The running time of defrost operation is over 30% of the total heating time
3) If liquid injection begins.
2.3 Oil equalizing control
2.3.1 Oil equalizing control on cooling mode
■ Ending condition
1) About 4min after control begins
■ Starting condition:every 2hours operation with constant compressors.
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