Daikin F-Series Service Manual page 102

SiBE12-712C
3. Limit of frequency variation width
4. Frequency management when other controls are functioning
5. Upper and lower limit of frequency by PI control
Function and Control
When the difference between input current and input current drooping value is less than 1 A,
the frequency increase width must be limited.
When each frequency is drooping;
Frequency management is carried out only when the frequency droops.
For limiting lower limit
Frequency management is carried out only when the frequency rises.
The frequency upper and lower limits are set depending on the total of S values of operating
room. When low noise commands come from the indoor unit more than one room or when
outdoor unit low noise or quiet commands come from all the rooms, the upper limit frequency
must be lowered than the usual setting.
Control Specification
91