Basic Control SiBE37-701_B
117 Function
2.5 Outdoor Unit Fan Control in Cooling Operation
While in cooling operation, if the outdoor temperature is low, this mode provides high-pressure
control using the outdoor unit fan to retain appropriate liquid pressure, thus ensuring refrigerant
circulation rate to be supplied to indoor units.
Fan step 9
Pc>3.28MPa PI control
Fan step 8
Pc>3.18MPa PI control
Fan step 7
Pc>3.08MPa PI control
Lapse of 20 sec. PI control
PI control Lapse of 20 sec.
-1 step on
outdoor unit fan
Hold the current
step on outdoor
unit fan
+1 step on
outdoor unit fan
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