< Operating state of each part during defrosting operation >
Indoor unit EEV : Open FAN : Stop
Outdoor unit FAN : Stop Compressor : In operation
[ STEP 1 ]
[ STEP 2 ]
Slave 1 Slave 2
Compressor
in operation
Stopped compressor
Defrosting
Compressor
in operation
Stopped compressor
Master
INV CONST. INV CONST. INV CONST.
Slave 1 Slave 2Master
INV CONST. INV CONST. INV CONST.
Defrost end Defrost end
Compressor operate by
the lowest speed ( 30rps)
Outdoor units which satisfied the defrosting end judgment temperature are stopped for constant speed
compressor and are operated at the lowest speed (30rps) for inverter compressor.
02-12
Defrost end
Stopped compressor
Slave 1 Slave 2Master
INV CONST. INV CONST. INV CONST.
Defrost end Defrost end
[ STEP 3 ]
When the defrosting of all outdoor units ends, all outdoor unit stop.
The start rotation execution is done, and restarts.
Defrosting Defrosting Defrosting
All compressors operates and it defrosting.
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