SiUS331708EA
Protection Control
Functions and Control
56
4.4
Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to
error, transient inverter overcurrent, and fin temperature increase.
Inverter overcurrent protection control
Radiation fin temperature control
Not limited
Limited
Inverter current > 13.7 A (24/36 class)
21.8 A (48/60 class)
Inverter current > 13.7 A (24/36 class)
21.8 A (48/60 class)
Inverter current
≥
22 A × 10% continues for 260 seconds
•
Inverter current
≤
13.7 A (24/36 class)
21.8 A (48/60 class)
•
Compressor upper limit: Maximum frequency
&
•
10 seconds
•
Matching of frequency
&
Compressor upper limit
frequency: 1-step down from
current compressor frequency
Compressor upper limit
frequency: 1-step up from
current compressor frequency
Inverter current
standby
Inverter current
≤
13.7 A (24/36 class)
21.8 A (48/60 class)
continues for 3 minutes
Current step maintained
Without conditions
When occurring 4 times within 60 minutes,
the error code
L8
is output.
Not limited
Limited
Tfin
≥
82˚C (179.6˚F) (24/36 class)
58˚C (136.4˚F) (48/60 class)
Tfin
≥
82˚C (179.6˚F) (24/36 class)
58˚C (136.4˚F) (48/60 class)
Tfin
≥
89˚C (192.2˚F) (24/36 class)
65˚C (149˚F) (48/60 class)
Fin temperature standby
•
Tfin < 79˚C (174.2˚F) (24/36 class)
55˚C (131˚F) (48/60 class)
•
Compressor upper limit: Maximum frequency
&
Compressor upper limit
frequency: 1-step down from
current compressor frequency
•
10 seconds
•
Matching of frequency
&
Tfin
≤
79˚C (174.2˚F) (24/36 class)
55˚C (131˚F) (48/60 class)
continues for 3 minutes
Compressor upper limit
frequency: 1-step up from
current compressor frequency
Current step maintained
Without conditions
When occurring 3 times within 60 minutes,
the error code
L4
is output.
Tfin: Fin thermistor temperature
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...