Troubleshooting (OP: Unified ON/OFF Controller)
Si34-601A
312
Troubleshooting
[CHECK 3] Check for causes of rise in high pressure
Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points.
Short circuit
Rise in high
pressure
Local
pressure
rise
High pipe
resistance
Stop valve closed
Bent or crashed pipe
Clogging of foreign
particles
←
Check to be sure the stop valve is open.
←
Conduct visual checks for pipe conditions.
←
Is there any temperature difference caused before
and after the filter or branch pipe.
[In cooling]
If the outdoor unit electronic
expansion valve is throttled:
(See *1.)
Faulty outdoor
unit motorized
valve
Faulty valve coil
Faulty valve body
←
Are the coil resistance and insulation normal?
A temperature difference in excess of 10
°
C
between the inlet and the outlet is deemed to be abnormal.
Faulty
control
Faulty high pressure sensor
Faulty control PCB
←
Are the electrical characteristics normal?
←
Is the pressure value checked with the Service Checker
corresponding to the measurement of the pressure sensor?
←
Are the coil resistance and insulation
normal?
Faulty high
pressure
control
Faulty indoor
unit motorized
valve
Faulty valve coil
Faulty valve body
[In heating]
If the indoor unit electronic
expansion valve excessively
throttled:
(See *2.)
Faulty
control
Faulty high pressure sensor
Faulty indoor unit
liquid pipe thermistor
Faulty control PCB
←
Are the electrical characteristics normal?
←
In the connector properly connected?
Are the thermistor resistance characteristics normal?
←
Is the pressure value checked with the Service
Checker corresponding to the measurement of the
pressure sensor?
[In cooling]
High suction
air
temperature
of the
condenser
[In heating]
High suction air
temperature
of outdoor unit
Short circuit
High ambient temperature
←
Is the suction air temperature not more than
43
°
C?
←
Is the outdoor temperature not more than 43
°
C?
High suction
air temperature
of indoor unit
High ambient temperature
←
Is the suction air temperature not more than 27
°
C?
←
Is the indoor temperature not more than 27
°
C?
Faulty suction air thermistor of indoor unit
High suction air temperature of outdoor unit
Faulty outdoor temperature thermistor of outdoor unit
←
Is the connector properly connected?
Are the thermistor resistance characteristics normal?
←
Is the outdoor temperature not more than 16?CWB?
←
Is the connector properly connected?
Are the thermistor resistance characteristics normal?
Degradation
in condensing
capacity
Dirty condenser
Mixing of non-condensable gas
←
Is the heat exchanger clogged? (In cooling)
←
Is air or else mixed in the refrigerant system?
Decreased
fan airflow
rate
Decreased
fan
output
Faulty fan
motor
←
Can the fan motor be rotated with hands?
Are the motor coil resistance and
insulation normal?
←
If a spare PC board is mounted, is the
capacity setting properly made?
Faulty control
PC board
(Including
capacity setting)
High air
passage
resistance
Dirty filter
←
Is the air filter clogged?
Obstacle
←
Is there any obstacle in the air passage?
Excessive refrigerant charging
Improper model selection [In heating]
←
Refer to page 249.
←
Is the indoor unit too small compared to
the large-sized outdoor unit?
*1: In cooling, it is normal if the outdoor unit electronic expansion valve (EV1) is fully open.
*2: In heating, the indoor unit electronic expansion valve is used for “subcooled degree control”.
(For details, refer to “Electronic Expansion Valve Control” on page 135.)
SDK04009
Содержание VRV III RXYQ5-54PY1
Страница 1: ...RXYQ5 54PY1 R 410A Heat Pump 50Hz Si34 601A...
Страница 22: ...Si34 601A Specifications 11 Part 2 Specifications 1 Specifications 12 1 1 Outdoor Units 12 1 2 Indoor Units 33...
Страница 72: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 61 RXYQ5P 3D050782 5 6 2 K T E D M N A P O W G J 4 3 1...
Страница 74: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 63 RXYQ8P 3D050783 5 7 6 2 3 1 4 D N A P M O W T E F V G J...
Страница 101: ...Refrigerant Flow for Each Operation Mode Si34 601A 90 Refirgerant Circuit...
Страница 153: ...Outline of Control Indoor Unit Si34 601A 142 Function...
Страница 219: ...Troubleshooting by Remote Controller Si34 601A 208 Troubleshooting...
Страница 226: ...Si34 601A Troubleshooting by Remote Controller Troubleshooting 215...
Страница 325: ...Troubleshooting OP Unified ON OFF Controller Si34 601A 314 Troubleshooting...
Страница 327: ...Piping Diagrams Si34 601A 316 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ5PY1 3D050782...
Страница 328: ...Si34 601A Piping Diagrams Appendix 317 RXYQ8P 3D050783...
Страница 329: ...Piping Diagrams Si34 601A 318 Appendix RXYQ10P 12PY1 3D050784...
Страница 330: ...Si34 601A Piping Diagrams Appendix 319 RXYQ14P 16P 18PY1 3D050785...
Страница 334: ...Si34 601A Piping Diagrams Appendix 323 FXUQ BEVQ Indoor unit Connection Unit 4D037995F 4D034127B...
Страница 335: ...Wiring Diagrams for Reference Si34 601A 324 Appendix 2 Wiring Diagrams for Reference 2 1 Outdoor Unit RXYQ5PY1 3D050453G...
Страница 336: ...Si34 601A Wiring Diagrams for Reference Appendix 325 RXYQ8PY1 3D050454J...
Страница 337: ...Wiring Diagrams for Reference Si34 601A 326 Appendix RXYQ10PY1 3D050455H...
Страница 338: ...Si34 601A Wiring Diagrams for Reference Appendix 327 RXYQ12PY1 3D051890G...
Страница 339: ...Wiring Diagrams for Reference Si34 601A 328 Appendix RXYQ14P 16P 18PY1 3D050456H...
Страница 340: ...Si34 601A Wiring Diagrams for Reference Appendix 329 2 2 Field Wiring RXYQ5P 8P 10P 12P 14P 16P 18PY1 3D051452D...
Страница 341: ...Wiring Diagrams for Reference Si34 601A 330 Appendix RXYQ20P 22P 24P 26P 28P 30P 32PY1 3D052261B...
Страница 342: ...Si34 601A Wiring Diagrams for Reference Appendix 331 RXYQ34P 36P 38P 40P 42P 44P 46P 48P 50P 52P 54PY1 C 3D052262B...
Страница 343: ...Wiring Diagrams for Reference Si34 601A 332 Appendix 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...
Страница 344: ...Si34 601A Wiring Diagrams for Reference Appendix 333 FXCQ40M 50M 80M 125MVE 3D039557A...
Страница 345: ...Wiring Diagrams for Reference Si34 601A 334 Appendix FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...
Страница 346: ...Si34 601A Wiring Diagrams for Reference Appendix 335 FXZQ20M 25M 32M 40M 50M7V1B 3D038359...
Страница 347: ...Wiring Diagrams for Reference Si34 601A 336 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C...
Страница 350: ...Si34 601A Wiring Diagrams for Reference Appendix 339 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...
Страница 351: ...Wiring Diagrams for Reference Si34 601A 340 Appendix FXMQ40MA 50MA 63MA 80MA 100MA 125MAVE 3D039620B...
Страница 352: ...Si34 601A Wiring Diagrams for Reference Appendix 341 FXMQ200MA 250MAVE 3D039621B...
Страница 353: ...Wiring Diagrams for Reference Si34 601A 342 Appendix FXHQ32MA 63MA 100MAVE 3D039801D...
Страница 354: ...Si34 601A Wiring Diagrams for Reference Appendix 343 FXAQ20MA 25MA 32MAVE 40MA 50MA 63MAVE 3D034206C...
Страница 356: ...Si34 601A Wiring Diagrams for Reference Appendix 345 FXUQ71MA 100MA 125MAV1 3D044973A...
Страница 357: ...Wiring Diagrams for Reference Si34 601A 346 Appendix FXMQ125MF 200MF 250MFV1 3D044996C...
Страница 358: ...Si34 601A Wiring Diagrams for Reference Appendix 347 BEVQ71MA 100MA 125MAVE 3D044901B...
Страница 381: ...Method of Checking The Inverter s Power Transistors and Diode Modules Si34 601A 370 Appendix...
Страница 395: ...Si34 601A iv Index...