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11. Operation Control
11.1 Cooling Operation
11.1.1 Outdoor fan control
• When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted
according to figure below:
11.1.2 Powerful Operation 1
• During cooling operation, this control is to concentrate outdoor unit capability to the powerful operation enabled
indoor unit by temporary stop the capability supply to low load demand indoor units.
• Operation start condition:
o Powerful operation ON for targeted indoor unit.
• Operation content:
o If other indoor units (where Powerful operation are OFF) achieve setting temperature continuously for 1
minutes after received powerful command from indoor unit, then capability supply to other indoor units are
stopped for minimum 3 minutes. Capability supply stop period follows powerful operation period.
• Operation stops when comply either one of the following conditions:
o When other indoor units (where Powerful operation are OFF) is lower than setting temperature.
o When the powerful operation is OFF for all indoor units.
o When Quiet operation received from 1 indoor unit.
o When protection control starts.
11.1.3 Powerful Operation 2
• During cooling operation, this control is to provide fast cooling operation compare to normal operation.
• Operation start if all condition below are complied:
o Powerful operation ON for indoor unit.
• Operation content:
o Outdoor fan speed will adjust automatically.
o Compressor frequency will adjust automatically.
• Operation stop when comply either one of the follow conditions:
o When the powerful operation is OFF for all indoor units.
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