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Error Codes ESIE11-05

132 Troubleshooting

4.17 “E9”

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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