Protection Control
60
Function
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 abnormal increase of high pressure and to protect compressors against the transient
increase of high pressure.
[In cooling operation]
[In heating operation]
Pc>3.47MPa
After 10 sec.
Pc>3.47MPa
Pc<3.23MPa
Pc>3.64MPa
Keeping the current step
After 15 sec.
High pressure not limited
High pressure limited
INV upper limit frequency :
1-step up from current
compressor frequency
Pc: HP pressure sensor detection value
INV upper limit frequency :
3-step down from current
compressor frequency
When occurring 10 times within 60
minutes, HPS is activated without high
pressure standby, thus outputting the
malfunction code "E3".
High pressure
standby
INV upper limit frequency=Max
High-pressure drop
Pc>3.04MPa
After 10 sec.
Pc>3.04MPa
Pc<2.94MPa
Pc>3.64MPa
Keeping the current step
After 60 sec.
High pressure not limited
High pressure limited
INV upper limit frequency :
1-step up from current
compressor frequency
Pc: HP pressure sensor detection value
INV upper limit frequency :
1-step down from current
compressor frequency
When occurring 10 times within 60
minutes, HPS is activated without high
pressure standby, thus outputting the
malfunction code "E3".
High pressure
standby
Pc<2.89MPa
Urban Multi ML5 · Mini UM · Heat Pump
Summary of Contents for U-4..6ML5XPQ
Page 1: ...Service Manual U 4 6ML5XPQ DPQ Urban Multi Mini UM Heat Pump ...
Page 2: ......
Page 12: ...Introduction x Urban Multi ML5 Mini UM Heat Pump ...
Page 37: ...Specifications Specifications 25 Panasonic ...
Page 38: ...Specifications 26 Specifications Urban Multi ML5 Mini UM Heat Pump ...
Page 39: ...Specifications Specifications 27 Panasonic ...
Page 40: ...Specifications 28 Specifications Urban Multi ML5 Mini UM Heat Pump ...
Page 134: ...Field Setting 122 Test Operation Urban Multi ML5 Mini UM Heat Pump ...
Page 235: ...Piping Diagrams Appendix 223 U 4 5 6ML5DPQ 3D052712 Panasonic ...
Page 238: ...Piping Diagrams 226 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 240: ...Wiring Diagrams 228 Appendix U 4 5 6ML5DPQ 3D05811B Urban Multi ML5 Mini UM Heat Pump ...
Page 241: ...Wiring Diagrams Appendix 229 2 2 Field Wiring U 4 5 6ML5XPQ 3D057919 Panasonic ...
Page 242: ...Wiring Diagrams 230 Appendix U 4 5 6ML5DPQ 3D052597 Urban Multi ML5 Mini UM Heat Pump ...
Page 243: ...Wiring Diagrams Appendix 231 2 3 Indoor Unit S 20 25 32 63LM3HPQ Panasonic ...
Page 244: ...Wiring Diagrams 232 Appendix S 40 50 80 125LM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 245: ...Wiring Diagrams Appendix 233 S 20 25 32 40 50 63 80 100 125UM4JPQ Panasonic ...
Page 246: ...Wiring Diagrams 234 Appendix S 20 25 32 40 50YM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 247: ...Wiring Diagrams Appendix 235 S 25 32 40 63DM3HPS 3D039564C Panasonic ...
Page 248: ...Wiring Diagrams 236 Appendix S 20 25NM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 249: ...Wiring Diagrams Appendix 237 S 20 25 32 40 50 63FM3HPQ Panasonic ...
Page 250: ...Wiring Diagrams 238 Appendix S80 100 125FM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 252: ...Wiring Diagrams 240 Appendix S 32 63 100TM3JPR 3D039801D Urban Multi ML5 Mini UM Heat Pump ...
Page 255: ...Wiring Diagrams Appendix 243 Panasonic ...
Page 256: ...Wiring Diagrams 244 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 257: ...Wiring Diagrams Appendix 245 Panasonic ...
Page 259: ...Option List Appendix 247 Panasonic ...
Page 262: ...Example of Connection 250 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 283: ......