Name: Haier AU112FYCRA(HW)
Brand: Haier
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ATW Service Manual

SYJS-03-2019REV.A

Edition: 2019-03

Table of Contents2
Outdoor Units Lineup3
Nomenclature4
- Energy Saving and High Reliability5
- Flexible and Convenient Control5
- Integrated and Compact Design5
Feature5
- Air Cooled Coils6
- Fan Motor6
- Hydraulic Module6
Description of Main Components6
Specifications8
Dimensions11
Piping Diagram13
Wiring Diagram16
Electric Characteristics18
Cooling Capacity19
Capacity Tables19
Ethylene Glycol Solutions25
Operation Limits Delivery-Leaving25
Fouling Factors26
Water Pressure Drop27
Sound Level29
Installation30
- Safety31
- Transporting Management Requirements33
- Storage Requirements33
- Loading and Unloading Requirements33
- Loading and Unloading/Transporting Management/Storage Requirements33
- Unpacking Inspection34
- Inspection on Installation Environment34
- Safety Principles of Installation34
- Electrical Safety Requirements34
- Fixing35
- Post-Installation Inspection Items and Test Run35
- Maintenance Instructions35
- Maintenance Precautions35
- Leak Detection Methods36
- Maintenance Site Requirements36
- Inspection on Maintenance Environment36
- Safety Principles37
- Maintenance Requirements37
- Maintenance of Electrical Components37
- Maintenance of Intrinsically Safe Elements37
- Refrigerant Charging Procedures38
- Welding38
- Removal and Vacuumizing38
- Scrapping39
- Precautions for Handling Units for Use with R3242
- Before Installing the Unit42
- Before Installing (Relocating) the Unit or Performing Electric Work43
- Before the Test Run43
- General Information44
- Combination and Options44
- Accessories44
- Manual Handling45
- Hoisting Method45
- Transportation and Lifting45
- Installation Instruction46
- Installation Place Selection46
- Installation and Maintenance Space47
- Multi-Unit Installation47
- Back and Side47
- Front and Back47
- Precautions on Installation48
- Foundation Work48
- Drain Work of the Outdoor Unit49
- Requirements and Recommendations for the Hydraulic Circuit49
- Hydraulic Circuit50
- Air Purging50
- Anti- Freezing50
- Minimum Flow Rate51
- Filter51
- Expansion Tank51
- Heat Loss51
- Water Control52
- Connection53
- Electric Wiring and the Application53
- Inspect53
- General Check53
- Communication Wiring Figure54
- Power Wiring Figure54
- Outdoor Power Source and Power Cable55
- Communication Wire for Wired Controller55
- Outdoor Unit Electrical Wiring Diagram56
PCB Photo57
- Bridge Instruction58
- BM1 Introduction58
- BM2 Introduction58
Dip Switch Setting58
Digital Tube Display59
- Preparing for First Start up61
- Operating Characteristics61
- Compressor Start up Delay61
Startup & Running & Maintenance61
- Routine Maintenance62
- Frost Prevention Alarm62
- Water Flow Alarm62
- Fan Speed Control62
- Chemical Washing63
- Refrigerant Gas Content63
- Shutting down for Long Periods63
- Interface Display64
YR-E27(Optional Wired Controller)64
- Key and Icon65
- Basic Function Description66
- Operation66
- Setting Special Functions67
- Child Lock67
- On/Off67
- Forced to Start Pump (for Debugging)67
- Timer71
- Week and Clock Function Settings73
- Dip Switch73
- Wired Controller Wiring Instruction73
Error Code75
- Temperature Sensor Failure76
- If Sensor Terminal Is Fixed Well76
Troubleshooting76
- System Water Flow Protection77
- LED Displays 08E/10E77
- High/Low Pressure Sensor Failure78
- High Pressure Switch Failure79
- Outdoor EEPROM Failure80
- If the EEPROM Is Fixed Well80
- Low Pressure too Low and Compression Ratio too High82
- Compression Ratio too Low83
- High Pressure too High Failure84
- Discharging Temp. Sensor Td too Low Protection85
- Communication with Inverter Module Failure86
- CT Current too Low or Current Sensor Failure87
- CT Current too High88
- DC Motor Blocked89
- Pressure Difference between High Pressure and Low Pressure Is Abnorma90
- Transient over Current in IPM Module Rectifier Side Hardware91
- Compressor Current Protection91
- IPM Module Hardware over Current91
- Transient over Current in IPM Module Rectifier Side Software91
- Compressor out of Control92
- The Compressor Start Failure92
- Radiator Temp. of Transducer too High93
- IPM Module Temp. too High93
- Protection of Overload94
- Voltage too Low of DC Bus Line of Transducer95
- Voltage too High of DC Bus Line of Transducer96
- Communication Abnormal between Transducer97
- Transducer over Current (Software Protection)98
- Current Detection Circuit of Transducer Is Abnormal99
- Power Supply of Transducer Abnormal100
- Power Supply of Inverter Board Is Abnormal101
- Radiator Temp. Sensor of Transducer Abnormal102
APPENDIX Sensor Resistance Table103

Brand	Haier
Model	AU112FYCRA(HW)
Category	Heat Pump
Language	English

Haier AU112FYCRA(HW) User Manual

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