Daikin E Series - Page 87

Daikin E Series

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Refrigerant Flow for Each Operation Mode SiAU18-715

74 Refrigerant Circuit

Table of Contents

Table of Contents4
Introduction9
- Safety Cautions9
- Used Icons13
Part 1 List of Functions14
List of Functions15
- Cooling Only15
- Heat Pump20
Part 2 Specifications26
- Cooling Only27
- Heat Pump36
Part 3 Printed Circuit Board Connector Wiring Diagram48
Printed Circuit Board Connector Wiring Diagram49
- Outdoor Unit49
- BP Unit54
- Wall Mounted Type 20/25/35 Class55
- Wall Mounted Type 50/60/71 Class57
- Duct Connected Type59
- Floor / Ceiling Suspended Dual Type61
- Floor Standing Type64
- Ceiling Mounted Cassette 600×600 Type67
- Ceiling Mounted Cassette Type (950×950)70
- 1.10 Ceiling Mounted Built-In Type73
- 1.11 Ceiling Suspended Type75
Part 4 Refrigerant Circuit78
Refrigerant Circuit79
- Outdoor Units79
- Refrigerant Circuit Part79
- BP Units81
Functional Parts Layout82
- Outdoor Units82
Refrigerant Flow for each Operation Mode83
- Cooling Operation83
- Heating Operation84
- Cooling Oil Return Operation85
- Heating Oil Return Operation & Defrost Operation86
Part 5 Function88
Operation Mode89
Basic Control90
- Normal Operation90
- Compressor PI Control91
- Electronic Expansion Valve PI Control94
- Cooling Operation Fan Control95
Special Control96
- Startup Control96
- Siau1896
- Oil Return Operation97
- Defrosting Operation99
- Pump-Down Residual Operation100
- Restart Standby100
- Stopping Operation101
Protection Control102
- High Pressure Protection Control102
- Low Pressure Protection Control103
- Discharge Pipe Protection Control104
- Inverter Protection Control105
- Freeze-Up Protection Control106
- Dew Condensation Prevention Control107
Other Control108
- Demand Operation108
- Heating Operation Prohibition108
BP Unit Control109
- BP Unit Command Conversion109
- BP Unit Electronic Expansion Valve Control110
- SH Control in Cooling Operation112
- SC Control in Heating Operation113
- Heat Exchanger Isothermal Control in Heating Operation113
Indoor Unit (RA Models)114
- Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing114
- Fan Speed Control for Indoor Units115
- Programme Dry Function116
- Automatic Operation117
- Thermostat Control118
- Night Set Mode119
- ECONO Mode120
- MOLD PROOF Operation120
- INTELLIGENT EYE (Wall Mounted Type Only)121
- HOME LEAVE Operation123
- Inverter POWERFUL Operation124
- 7.12 Other Functions125
Indoor Unit (Skyair Models)127
- Function Outline127
- Electric Function Parts128
- Function Details129
Part 6 Test Operation140
Test Operation141
- Procedure and Outline141
Outdoor Unit PCB Layout146
Field Setting147
- Field Setting from Outdoor Unit147
- Detail of Setting Mode156
Field Setting for Skyair Indoor Unit165
- Explanation165
- Field Setting166
- Initial Setting Contents167
- Local Setting Mode Number168
- Detailed Explanation of Setting Modes169
- Centralized Group No. Setting173
- Maintenance Mode Setting174
Test Operation and Field Setting for RA Indoor Unit175
- Test Operation from the Remote Controller175
- Jumper Settings176
Part 7 Operation Manual178
System Configuration179
- Operation Instructions179
Instruction180
- RMK(X)S Series180
- Wall Mounted, Duct, Floor/Ceiling Type181
- FVXS Series237
- Ceiling Mounted Cassette Type267
- Ceiling Mounted Built-In Type289
- Safety Considerations290
- Ceiling Suspended Type299
Part 8 Troubleshooting312
Siau18313
Caution for Diagnosis314
- Troubleshooting with the Operation Lamp (RA Indoor Unit)314
- Troubleshooting with the LED on the Skyair Indoor Unit315
- Troubleshooting with the LED on the Outdoor Unit316
- Troubleshooting with the LED on the BP Unit317
Service Check Function318
- RA Indoor Unit Wireless Remote Controller318
- Skyair Indoor Unit INSPECTION/TEST Button323
- Skyair Indoor Unit Wired Remote Controller324
- Skyair Indoor Unit Wireless Remote Controller325
- Sky Air Indoor Unit Error Codes and LED Indication327
- Malfunction Code Indication by Outdoor Unit PCB328
List of Malfunction Code332
Troubleshooting for RA Indoor Unit334
- Indoor Unit PCB Abnormality334
- Freeze-Up Protection Control or High Pressure Control335
- Fan Motor or Related Abnormality337
- Thermistor or Related Abnormality (Indoor Unit)340
- Check341
  - Thermistor Resistance Check342
  - Hall IC Check343
Troubleshooting for Skyair Indoor Unit344
- Indoor Unit PCB Abnormality344
- Malfunction of Drain Water Level System (Float Type)345
- Malfunction of Drain System347
- Indoor Unit Fan Motor Lock348
- Malfunction of Indoor Unit Fan Motor349
- Swing Flap Motor Malfunction / Lock351
- Malfunction of Capacity Setting353
- Malfunction of Heat Exchanger Thermistor (R2T)354
- Malfunction of Heat Exchanger Thermistor (R3T)355
- Malfunction of Suction Air Thermistor356
- Siau18356
- Malfunction of Remote Controller Thermistor357
- Transmission Error (between Indoor Unit and Remote Controller)358
- Transmission Error (between Main and Sub Remote Controller)359
- Malfunction of Field Setting Switch360
- 5.15 Check361
Troubleshooting for BP Unit363
- Malfunction of Electronic Expansion Valve363
- Faulty BP Unit PCB364
- Faulty BP Liquid or Gas Pipe Thermistor365
- Transmission Error between Indoor Unit and BP Unit366
- Transmission Error between Outdoor Unit and BP Unit368
- Check369
Troubleshooting for Outdoor Unit370
- Faulty Outdoor Unit PCB370
- Actuation of High Pressure Switch371
- Actuation of Low Pressure Sensor373
- Compressor Motor Lock375
- Malfunction of Outdoor Unit Fan Motor376
- Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E)377
- Abnormal Discharge Pipe Temperature379
- Refrigerant Overcharged380
- Malfunction of Thermistor for Outdoor Air (R1T)381
- Malfunction of Discharge Pipe Thermistor (R2T)382
- Malfunction of Thermistor (R3T, R5T) for Suction Pipe1, 2383
- Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger384
- Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe385
- Malfunction of Subcooling Heat Exchanger Thermistor (R6T)386
- Malfunction of High Pressure Sensor387
- Malfunction of Low Pressure Sensor388
- Malfunction of PCB389
- Malfunction of Inverter Radiating Fin Temperature Rise390
- Inverter Compressor Abnormal391
- Inverter Current Abnormal392
- Inverter Start up Error393
- Malfunction of Transmission between Inverter and Control PCB394
- High Voltage of Capacitor in Main Inverter Circuit395
- Malfunction of Inverter Radiating Fin Temperature Rise Sensor396
- Faulty Combination of Inverter and Fan Driver397
- Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure398
- Power Supply Insufficient or Instantaneous Failure400
- Check Operation Not Executed402
- Malfunction of Transmission between Indoor Units and Outdoor Units403
- Malfunction of Transmission between Remote Controller and Indoor Unit405
- Malfunction of Transmission between Main and Sub Remote Controllers406
- Malfunction of Transmission between Indoor and Outdoor Units in the same System407
- Siau18408
- Excessive Number of Indoor Units409
- Address Duplication of Central Remote Controller410
- Malfunction of Transmission between Central Remote Controller and Indoor Unit411
- System Is Not Set yet413
- Malfunction of System, Refrigerant System Address Undefined414
Check415
Thermistor Resistance / Temperature Characteristics418
10.Pressure Sensor420
Method of Replacing the Inverter's Power Transistors Modules421
Part 9 Appendix424
Piping Diagrams425
- Outdoor Units425
- BP Units426
- Indoor Units427
Wiring Diagrams433
- Outdoor Units433
- BP Units435
- Indoor Units436
Index444

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