Si39-502A
Troubleshooting by Indication on the Remote Controller
Troubleshooting
187
3.31
“
JC
”
Outdoor Unit:
Malfunction of Low Pressure Sensor
Remote
Controller
Display
JC
Applicable
Models
RXYQ8~30MY1K (E), YLK (E)
Method of
Malfunction
Detection
Malfunction is detected from pressure detected by low pressure sensor.
Malfunction
Decision
Conditions
When the suction pipe pressure sensor is short circuit or open circuit.
Supposed
Causes
Defect of low pressure sensor system
Connection of high pressure sensor with wrong connection.
Defect of outdoor unit PC board.
Troubleshooting
∗
1: Voltage measurement point
∗
2: Refer to “Pressure Sensor”, pressure / voltage characteristics table on P279.
(V2808)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
The
relationship
between the
∗
1
VH and low pressure is
normal (see
∗
2) when voltage
is measured between X45A pins
(2) and (3) of outdoor unit
PC board (A1P)
(see
∗
1).
Replace the low pressure sensor.
Connect low pressure sensor
property and restart system.
NO
NO
Replace outdoor unit PC board
(A1P).
YES
YES
The low
pressure sensor is
connected to X45A (blue)
of outdoor unit PC
board (A1P).
Summary of Contents for VRV II RXYQ8MY1K
Page 53: ...Specifications Si39 502A 42 Specifications...
Page 143: ...Field Setting Si39 502A 132 Test Operation...
Page 258: ...Si39 502A Wiring Diagrams for Reference Appendix 247 FXCQ40M 50M 80M 125MVE 3D039557A...
Page 260: ...Si39 502A Wiring Diagrams for Reference Appendix 249 FXKQ25M 32M 40M 63MVE 3D039564A...
Page 264: ...Si39 502A Wiring Diagrams for Reference Appendix 253 FXMQ40M 50M 63M 80M 100M 125MVE 3D039620A...
Page 265: ...Wiring Diagrams for Reference Si39 502A 254 Appendix FXMQ200M 250MVE 3D039621A...
Page 266: ...Si39 502A Wiring Diagrams for Reference Appendix 255 FXHQ32M 63M 100MVE 3D039801C...
Page 267: ...Wiring Diagrams for Reference Si39 502A 256 Appendix FXAQ20M 25M 32M 40M 50M 63MVE 3D034206A...
Page 269: ...Wiring Diagrams for Reference Si39 502A 258 Appendix FXUQ71M 100M 125MV1 3D044973...
Page 270: ...Si39 502A Wiring Diagrams for Reference Appendix 259 FXAQ20MH 25MH 32MH 40MH 50MHV1 3D046348A...
Page 271: ...Wiring Diagrams for Reference Si39 502A 260 Appendix FXLQ20MH 25MH 32MH 40MH 50MHV1 3D046787A...
Page 272: ...Si39 502A Wiring Diagrams for Reference Appendix 261 BEVQ50MVE 3D046579A Notes...
Page 273: ...Wiring Diagrams for Reference Si39 502A 262 Appendix BEVQ71M 100M 125MVE 3D044901A Notes...
Page 285: ...Piping Installation Point Si39 502A 274 Appendix...
Page 293: ...Method of Replacing The Inverter s Power Transistors and Diode Modules Si39 502A 282 Appendix...
Page 307: ...Si39 502A iv Index...
