SiUS331604E
Protection Control
Functions and Control
44
4. Protection Control
4.1
High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due to an abnormal
increase in high pressure and to protect compressors against transient increases in high pressure.
Cooling operation
Pc > 3.47 MPa (503 psi)
After 10 sec.
Pc > 3.47 MPa (503 psi)
Pc < 3.23 MPa (468 psi)
Pc > 3.64 MPa (528 psi)
Current step maintained
After 15 sec.
High pressure not limited
High pressure limited
Pc: High pressure sensor detection value
Compressor upper limit
frequency: 3-step down from
current compressor frequency
When occurring 10 times within 60
minutes, high pressure switch is activated
without high pressure standby, thus
outputting the error code
E3
.
Compressor upper limit frequency: Maximum
High pressure
standby
Compressor upper limit
frequency: 1-step up from
current compressor frequency
Summary of Contents for VRV IV-S RXTQ-TAVJU Series
Page 1: ...Service Manual SiUS331604E RXTQ36 48 60TAVJU Heat Pump 60 Hz...
Page 254: ...Wiring Diagrams SiUS331604E 241 Appendix RXTQ48TAVJU 3D100496A...
Page 255: ...SiUS331604E Wiring Diagrams Appendix 242 RXTQ60TAVJU 3D100497A...
Page 260: ...Wiring Diagrams SiUS331604E 247 Appendix FXEQ07 09 12 15 18 24PVJU C 3D098557...
Page 267: ...SiUS331604E Wiring Diagrams Appendix 254 FXTQ12 18 24 30 36 42 48 54PAVJU 3D065036G...
Page 270: ...Wiring Diagrams SiUS331604E 257 Appendix VAM1200GVJU 3D073270C...
Page 271: ...Revision History Month Year Version Revised contents 06 2016 SiUS331604E First edition...
