2TABLE OF CONTENTSPAGE PAGE1. Safety Precautions .............................................32. Specifications .....................................................52.1 WH-SHF09F3E5 WH-UH09FE5...................52.2 WH-SHF12F6E5 WH-UH12FE5...................73. Features...............................................................94. Location of Controls and Components..........104.1 Indoor Unit ...................................................104.2 Outdoor Unit.................................................195. Dimensions .......................................................205.1 Indoor Unit ...................................................205.2 Outdoor Unit.................................................216. Refrigeration and Water Cycle Diagram ........227. Block Diagram ..................................................248. Wiring Connection Diagram ............................258.1 Indoor Unit ...................................................258.2 Outdoor Unit.................................................279. Electronic Circuit Diagram ..............................289.1 Indoor Unit ...................................................289.2 Outdoor Unit.................................................3010. Printed Circuit Board .......................................3110.1 Indoor Unit ...................................................3110.2 Outdoor Unit.................................................3311. Installation Instruction.....................................3511.1 Select the Best Location ..............................3511.2 Indoor/Outdoor Unit Installation Diagram ....3511.3 Indoor Unit ...................................................3611.4 Outdoor Unit.................................................4112. Operation and Control .....................................4512.1 Basic Function .............................................4512.2 Water Pump .................................................6012.3 Pump Down Operation [Service Mode: 01] .6212.4 Flow Switch..................................................6212.5 Indoor Unit Safety ........................................6312.6 Auto Restart Control ....................................6312.7 Indication Panel ...........................................6312.8 Indoor Back-Up Heater Control ...................6412.9 Tank Booster Heater Control .......................6512.10 Base Pan Heater Control (Optional) ............6512.11 Sterilization Mode ........................................6612.12 Quiet Operation............................................6612.13 Anti Freeze Control ......................................6712.14 Solar Operation (Optional)...........................6812.15 External Room Thermostat Control (Optional)....................................................................7112.16 Three Ways Valve Control...........................7212.17 Two Ways Valve Control .............................7212.18 Holiday Mode ...............................................7312.19 Dry Concrete Function.................................7313. Protection Control............................................7413.1 Protection Control for All Operations .......... 7413.2 Protection Control for Heating Operation.... 7614. Servicing Guide ............................................... 7714.1 How to Take Out Front Plate ...................... 7714.2 How to Take Out Side Cabinet ................... 7714.3 Test Run ..................................................... 7714.4 Proper Pump Down Procedure [SERVICEMODE: 01] .................................................. 7714.5 How to Adjust Water Flow Rate [SERVICEMODE: 02] .................................................. 7814.6 Expansion Vessel Pre Pressure Checking . 7814.7 Dry Concrete [SERVICE MODE: 03] .......... 7814.8 EEPROM Factory Default Data SetupProcedure ................................................... 7915. Maintenance Guide.......................................... 8016. Troubleshooting Guide................................... 8216.1 Refrigeration Cycle System ........................ 8216.2 Relationship between the Condition of the Air-to-Water Heatpump Indoor and Outdoor Unitsand Pressure and Electric Current.............. 8316.3 Breakdown Self Diagnosis Function ........... 8416.4 Error Codes Table....................................... 8516.5 Self-diagnosis Method ................................ 8717. Disassembly and Assembly Instructions ... 12417.1 To Remove Front Plate............................. 12417.2 To Remove Cabinet .................................. 12417.3 To Remove Pressure Gauge .................... 12517.4 To Remove Control Panel ........................ 12517.5 To Remove RCCB .................................... 12617.6 To Remove Transformer and ElectronicController Board........................................ 12717.7 To Remove Pressure Relief Valve, FlowSwitch and Air Purge Valve ...................... 12717.8 To Remove Water Pump and Bottle Complete................................................................. 12818. Technical Data ............................................... 13018.1 Operation Characteristics ......................... 13018.2 Heating Capacity Table............................. 13418.3 Heating Capacity Table............................. 13518.4 Usage Limitation ....................................... 13519. Exploded View and Replacement Parts List13619.1 WH-SHF09F3E5 WH-SHF12F6E5.......... 13619.2 WH-UH09FE5 WH-UH12FE5.................. 138