SiUS122226E Control Specification
Part 4 Functions and Control 107
4.9 High Pressure Protection Control
Outline In order to prevent abnormal high pressures in the system and hence avoiding activation of the high
pressure safety device the below control function will be activated.
Details
Indoor heat exchanger
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
Pressure
4.15 MPa
High Pressure
Protection
Control
Heating
Peak- cut
control
Condensing
temperature
HPS ≥ 4.15 MPa
Compressor on
Compressor stop ( E3 indication)
Stopped 4 times
in 60 minutes
Abnormal stop ( E3 indication)
Normal operation
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