Daikin VRV II RXYQ5MATL, Service Manual

Page: 80 / 331

Si39-504 Basic Control
Function 69
2.2 Compressor PI Control
Compressor PI Control
Carries out the compressor capacity PI control to maintain Te at constant during cooling
operation and Tc at constant during heating operation to ensure stable unit performance.
[Cooling operation]
[Heating operation]
Controls compressor capacity to adjust Te to
achieve target value (TeS). Te : Low pressure equivalent saturation
temperature (°C)
Te set value (Make this setting while in Setting
mode 2.) TeS : Target Te value
(Varies depending on Te setting, operating
frequency, etc.)
*On multi-outdoor-unit systems, this control is made
according to values of the first-priority unit, which is
detected with the pressure sensor.
Te setting
L M (Normal)
(factory
setting)
H
3 6 9
Controls compressor capacity to adjust Tc to
achieve target value (TcS). Tc : High pressure equivalent saturation
temperature (°C)
Te set value (Make this setting while in Setting
mode 2.) TcS : Target Tc value
(Varies depending on Tc setting, operating
frequency, etc.)
*On multi-outdoor-unit systems, this control is made
according to values of the first-priority unit, which is
detected with the pressure sensor.
Tc setting
L M (Normal)
(factory
setting)
H
43 46 49