Compressor Pi Control - Daikin REYQ72 Serveice Manual

SiUS39-602
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]
Controls compressor capacity to adjust Te to
achieve target value (TeS).
Te setting
37.5
[Heating operation]
Controls compressor capacity to adjust Tc to
achieve target value (TcS).
Tc setting
109.5
Function
L M (Normal) H
(factory
setting)
43 48
L M (Normal) H
(factory
setting)
115 120
Te : Low pressure equivalent saturation temperature
(°F)
TeS : Target Te value
(Varies depending on Te setting, operating
frequency, etc.)
Tc : High pressure equivalent saturation temperature
(°F)
TcS : Target Tc value
(Varies depending on Tc setting, operating
frequency, etc.)
Basic Control
41