SiAF332111E
Control for 4/5/10/12 HP Outdoor Unit
Part 4 Functions and Control
63
1.4 Protection Control
1.4.1 High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due
to abnormal increase of high pressure and to protect compressors against transient increase in
high pressure.
Cooling operation
Pc > 3.47 MPa
After 10 seconds
Pc > 3.47 MPa
Pc < 3.23 MPa
Pc > 3.64 MPa
Current step maintained
After 15 seconds
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 S RXMQ10ARY1
Page 1: ...Service Manual Cooling Only 50 60 Hz RXQ4 5ARV1 RXMQ6ARV1 RXMQ8 10 12ARY1 SiAF332111E...
Page 369: ...SiAF332111E Wiring Diagrams Part 7 Appendix 363 RXMQ6ARV1 C 3D137051...
Page 370: ...Wiring Diagrams SiAF332111E 364 Part 7 Appendix RXMQ8ARY1 C 3D137060...
Page 371: ...SiAF332111E Wiring Diagrams Part 7 Appendix 365 RXMQ10 12ARY1 3D121610B...
Page 375: ...SiAF332111E Wiring Diagrams Part 7 Appendix 369 FXMQ40 50 63 80 100ARV1 3D127112 04 59...
