Daikin EWYQ032BAW - 4.6. Connect the electrical wiring

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Refrigerant Circuit ESIE11-05

4 General Outline

EWYQ016BA

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Table of Contents

Table of Contents3
Table of Contents4
Introduction7
Safety Cautions7
Caution in Repair7
Cautions Regarding Products after Repair9
Inspection after Repair10
Using Icons10
Using Icons List11
Part 1 - General Outline12
- Option Specifications13
- Technical Specifications13
- Electrical Specifications13
- Nomenclature13
- Operation Range13
- Refrigerant Circuit14
Esie1116
- EWYQ021BA, 025BA, 040BA Module, 050BA Module17
- EWYQ032BA, 064BA Module19
- Front View20
- Functional Parts Layout Outdoor Unit20
- Top View20
- Refrigerant Flow for each Operation Mode23
- Heating Operation24
- Ewa/Yq016Ba, 021Ba, 025Ba, 032Ba29
- Water Circuit29
  - Legend30
  - Notes30
- EWA/YQ040BA, 050BA, 064BA Module31
- Pressure Drop33
- Hydrobox Wiring36
- Wiring Diagram36
- Switch Box Layout38
- Wiring Diagram - Three Phase (3N~)39
- Wiring Outdoor40
- Field Wiring49
Part 2 - Functional Description50
- Function General51
- Symbol51
- Operation Mode52
- Basic Control53
- List of Functions in Normal Operation53
- Normal Operation53
- Compressor PI Control54
- Compressor Step Control54
- Electronic Expansion Valve PI Control55
- Subcooling Electronic Expansion Valve EV2 Control55
- Step Control of Outdoor Unit Fans56
- Outdoor Unit Fan Control in Cooling Operation57
- Special Control58
- Startup Control58
  - Startup Control in Cooling Operation58
  - Startup Control in Heating Operation59
- Defrosting Operation60
- Pump-Down Residual Operation61
  - Pump-Down Residual Operation in Cooling Operation61
  - Pump-Down Residual Operation in Heating Operation61
  - Crankcase Heater Control62
  - Restart Standby62
- Standby62
- Stopping Operation63
- When System Is in Stop Mode (Normal Operation Stop)63
- High Pressure Protection Control64
- Protection Control64
- Low Pressure Protection Control65
- Discharge Pipe Protection Control66
  - INV Compressor66
  - STD Compressor66
  - Inverter Fin Temperature Control67
  - Inverter Overcurrent Protection Control67
- Inverter Protection Control67
- STD Compressor Overload Protection68
- Emergency Operation69
- Other Control69
- Restrictions for Emergency Operation69
- Demand Operation72
- Freeze Prevention73
- Outline of Control (Hydrobox)73
- Thermostat Control74
- Flow Control75
  - Unit State DEFROST75
  - Unit State OPERATION LED on75
  - Unit State RUN COOLING/HEATING75
- Field Setting from Outdoor Unit76
- Setting at Replacement by Spare PCB78
- Initial Conditions of Dip Switches78
- Setting Mode 1 (H1P Off)79
- Setting by BS Button Switches79
- Monitor Mode (H1P Blinks)80
Setting Mode 181
Setting Mode 282
- Monitor Mode86
- Setting of Low Noise Operation and Demand Operation87
- Setting of Refrigerant Recovery Mode92
- Setting of Vacuuming Mode93
- Remote Controller94
- Temperature Read out for Remote Control94
- Field Setting95
- Weekly Schedual108
Part 3 - Troubleshooting110
Symptom-Based Troubleshooting112
Malfunction Codes and Description115
Malfunction Code Indication by Outdoor Unit PCB117
A1121
Error Codes121
- A6122
- A9123
- Ae125
- Aj126
- C1127
- C4128
- C9129
- Ca130
- Cj131
- E1132
- E6139
- E7140
- L8161
- L9163
- Lc165
- Pj171
- U0172
- U1173
- U2174
- U4178
- U5179
- U8180
- Ua181
- Uf182
- Uh183
Part 4 - Service Procedure192
- Ew*Q016Ba193
- List of Electrical and Functional Parts193
- EW*Q021BA, 025BA, 040BA Module, 050BA Module194
- EW*Q032BA, 064BA Module195
- Thermistor Resistance / Temperature Characteristics196
- Pressure Sensor198
- Checking Failures in Power Semiconductors Mounted on Inverter PCB199
- Method of Checking the Inverter's Power Transistors and Diode Modules199
  - Diode Module Checking200
  - Power Module Checking200
- Ekrp1Aht201
- Options201
- Dta104A62204
- Procedure for Software Upload Hydrobox209
- What Do You Need209
- Software Upload Procedure210
Part 5 - Commissioning and Test Run218
- Installation Process219
- Test Run219
- Check Work Prior to Turn Power Supply on220
- Procedure and Outline220
- Operation When Power Is Turned on223
- When Turning on Power First Time223
- Hydrobox or Outdoor Unit PCB Has Been Changed223
- Part 6 - Maintenance224
- Maintenance of the Main Parts226
- Preventive Maintenance226
- Unit Casing226
- Compressor226
- Index227

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