Troubleshooting by Indication on the Remote Controller
Si34-603
174
Troubleshooting
Troubleshooting
∗
2: Voltage measurement point
∗
1: Refer to “Thermistor Resistance / Temperature Characteristics” table on P231.
∗
2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P233.
(V2819)
The suction
pipe1 temp. minus
low pressure saturation
temp. is 20 ˚C
or higher.
Resistance
is normal when
measured with the
thermistor (R3T) for
suction pipe1 disconnected
from the outdoor
unit PC
board.
∗
1
Out of gas or refrigerant
system is clogged. Requires
check of refrigerant system.
Replace the thermistor.
Replace the outdoor unit PC
board (A1P).
YES
YES
NO
NO
Out of gas, closing of stop
valve or refrigerant system is
clogged. Requires check of
refrigerant system.
Replace main outdoor unit
PC board (A1P).
YES
YES
Is the
low pressure sensor
correct?
Replace the low pressure
sensor.
NO
NO
Cooling
Low pressure
is 0.25 MPa
or less.
The
voltage
of X18A pins (2)
and (3) on main
outdoor unit PC board
(A1P) is 1.0 VDC or less.
(Low pressure
sensor output
voltage)
∗
2
NO
NO
YES
YES
Replace low pressure sensor.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for RXMQ4 5 6PVE
Page 11: ...Introduction Si34 603 x...
Page 45: ...Specifications Si34 603 34 Specifications...
Page 56: ...Si34 603 Refrigerant Circuit Refrigerant Circuit 45 C 3D052627A A P G N M D D O H F S E T...
Page 121: ...Field Setting Si34 603 110 Test Operation...
Page 222: ...Si34 603 Wiring Diagrams Appendix 211 2 1 2 Cooling Only RXMQ4 5 6PVE 3D051731C...
Page 223: ...Wiring Diagrams Si34 603 212 Appendix 2 2 Field Wiring RX Y MQ4 5 6PVE 3D052597...
Page 224: ...Si34 603 Wiring Diagrams Appendix 213 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...
Page 225: ...Wiring Diagrams Si34 603 214 Appendix FXCQ40M 50M 80M 125MVE 3D039557A...
Page 226: ...Si34 603 Wiring Diagrams Appendix 215 FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...
Page 227: ...Wiring Diagrams Si34 603 216 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C...
Page 230: ...Si34 603 Wiring Diagrams Appendix 219 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...
Page 231: ...Wiring Diagrams Si34 603 220 Appendix FXMQ40MA 50MA 63MA 80MA 100MA 125MAVE 3D039620B...
Page 232: ...Si34 603 Wiring Diagrams Appendix 221 FXHQ32MA 63MA 100MAVE 3D039801D...
Page 233: ...Wiring Diagrams Si34 603 222 Appendix FXAQ20MA 25MA 32MAVE 40MA 50MA 63MAVE 3D034206C...
Page 235: ...Wiring Diagrams Si34 603 224 Appendix FXUQ71MA 100MA 125MAV1 3D044973A...
Page 236: ...Si34 603 Wiring Diagrams Appendix 225 BEVQ71MA 100MA 125MAVE 3D044901B...
Page 241: ...Example of Connection Si34 603 230 Appendix...
Page 247: ...Method of Replacing the Inverter s Power Transistors Modules Si34 603 236 Appendix...
Page 262: ...Service Manual R 410A RX Y MQ4 5 6PVE Si34 603 Printed in Japan 07 2006 AK July...