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TABLE OF CONTENTS
1. Safety Precautions ............................................. 4
2. Specifications ..................................................... 7
2.1 WH-SXC09H3E8 WH-UX09HE8 ................... 7
2.2 WH-SXC12H9E8 WH-UX12HE8 ................. 10
2.3 WH-SXC16H9E8 WH-UX16HE8 ................. 13
3. Features ............................................................. 16
4. Location of Controls and Components .......... 17
4.1 Indoor Unit ................................................... 17
4.2 Outdoor Unit ................................................. 41
5. Dimensions ....................................................... 42
5.1 Indoor Unit ................................................... 42
5.2 Outdoor Unit ................................................. 43
6. Refrigeration and Water Cycle Diagram ........ 44
6.1 Standard System (Optional PCB not
connected) ................................................... 45
6.2 Advance System (Optional PCB connected) ...
.................................................................... 45
7. Block Diagram .................................................. 46
7.1 WH-SXC09H3E8 WH-UX09HE8 ................. 46
7.2 WH-SXC12H9E8 WH-UX12HE8 ................. 47
7.3 WH-SXC16H9E8 WH-UX16HE8 ................. 48
8. Wiring Connection Diagram ............................ 49
8.1 Indoor Unit ................................................... 49
8.2 Outdoor Unit ................................................. 51
9. Electronic Circuit Diagram .............................. 53
9.1 Indoor Unit ................................................... 53
9.2 Outdoor Unit ................................................. 55
10. Printed Circuit Board ....................................... 57
10.1 Indoor Unit ................................................... 57
10.2 Outdoor Unit ................................................. 59
11. Installation Instruction ..................................... 62
11.1 Indoor Unit ................................................... 62
11.2 Variation of system ...................................... 70
11.3 System Installation ....................................... 82
11.4 Service and maintenance ............................ 93
11.5 Outdoor Unit ................................................. 94
12. Operation and Control ...................................101
12.1 Basic Function ...........................................101
12.2 Water Pump ...............................................114
12.3 Indoor Unit Safety ......................................118
12.4 Auto Restart Control ..................................118
12.5 Indication Panel .........................................118
12.6 Indoor Back-Up Heater Control .................119
12.7 Tank Heater Control ...................................121
12.8 Base Pan Heater Control (Optional) ..........123
12.9 Heater Turn ON/OFF priority Control .........123
12.10Force Heater Mode ....................................124
12.11Powerful Operation ....................................125
12.12Quiet Operation ..........................................125
12.13Sterilization Mode ......................................126
12.14Outdoor Ambient Thermo OFF Control .....127
12.15Alternative Outdoor Ambient Sensor Control ..
................................................................. 128
12.16Force DHW mode ..................................... 128
12.17Anti Freeze Control ................................... 129
12.18Solar Operation (Optional) ........................ 130
12.19Boiler Bivalent Control .............................. 132
12.20External Room Thermostat Control (Optional)
................................................................. 134
12.21Three Ways Valve Control ........................ 135
12.22Two Ways Valve Control........................... 135
12.23External OFF/ON Control ......................... 136
12.24External Compressor Switch (Optional PCB) ..
................................................................. 137
12.25Heat/Cool Switch (Optional PCB) ............. 138
12.26SG Ready Control (Optional PCB) ........... 139
12.27Demand Control (Optional PCB) .............. 141
12.28Holiday Mode ............................................ 142
12.29Dry Concrete ............................................. 142
12.30Flow Sensor .............................................. 142
13. Protection Control ......................................... 143
13.1 Protection Control for All Operations ........ 143
13.2 Protection Control for Heating Operation.. 145
13.3 Protection Control for Cooling Operation .. 147
14. Servicing Mode .............................................. 148
14.1 How to Take Out Front Plate .................... 148
14.2 Test Run ................................................... 148
14.3 Expansion Vessel Pre Pressure Checking 148
14.4 Pump Down Procedures ........................... 149
14.5 How To Adjust Pump Speed ..................... 150
14.6 How To Adjust Pump Speed ..................... 151
14.7 How To Unlock Cool Mode ....................... 152
14.8 EEPROM Factory Default Data Setup
Procedure ................................................. 153
14.9 Dry Concrete Setup .................................. 154
15. Maintenance Guide........................................ 156
15.1 Maintenance for Water Filter Set .............. 157
16. Troubleshooting Guide ................................. 159
16.1 Refrigeration Cycle System ...................... 159
16.2 Relationship between the Condition of the Air-
to-Water Heatpump Indoor and Outdoor Units
and Pressure and Electric Current ............ 160
16.3 Breakdown Self Diagnosis Function ......... 161
16.4 Error Codes Table ..................................... 163
16.5 Self-diagnosis Method .............................. 165
17. Disassembly and Assembly Instructions ... 212
17.1 To Remove Front Plate ............................. 212
17.2 To Remove Pressure Gauge .................... 212
17.3 To Open Control Board Cover .................. 213
17.4 To Remove Control Panel ........................ 213
17.5 To Remove RCCB .................................... 214
17.6 To Remove Transformer and Electronic
Controller Board ........................................ 214
17.7 To Open Control Board ............................. 215
17.8 To Remove Pressure Relief Valve, Air Purge
Valve and Flow Sensor ............................. 215
17.9 To Remove Water Pump and Bottle Complete
................................................................. 216
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