Table Of Contents - Panasonic WH-MHF12G9E8 Service Manual

TABLE OF CONTENTS

1. Safety Precautions ............................................. 3
2. Specifications ..................................................... 5
2.1 WH-MHF09G3E8 ........................................... 5
2.2 WH-MHF12G9E8 ........................................... 7
3. Features ............................................................... 9
4. Location of Controls and Components .......... 10
4.1 Mono Bloc Unit ............................................. 10
5. Dimensions ....................................................... 20
5.1 Mono Bloc Unit ............................................. 20
6. Refrigeration and Water Cycle Diagram ........ 21
7. Block Diagram .................................................. 23
7.1 WH-MHF09G3E8 ......................................... 23
7.2 WH-MHF12G9E8 ......................................... 24
8. Wiring Connection Diagram ............................ 25
8.1 WH-MHF09G3E8 ......................................... 25
8.2 WH-MHF12G9E8 ......................................... 26
9. Electronic Circuit Diagram .............................. 28
9.1 WH-MHF09G3E8 ......................................... 28
9.2 WH-MHF12G9E8 ......................................... 29
10. Printed Circuit Board ....................................... 31
10.1 Water system ............................................... 31
10.2 Refrigerant System ...................................... 33
11. Installation Instruction ..................................... 35
11.1 Select The Best Location ............................. 37
11.2 Mono Bloc Unit Installation .......................... 37
11.3 Piping Installation ......................................... 38
11.4 Connect The Cord And Cable To Mono Bloc
Unit ............................................................... 39
11.5 Checking and Test Run Procedures ............ 45
12. Operation and Control ..................................... 46
12.1 Basic Function ............................................. 46
12.2 Water Pump ................................................. 61
12.3 Pump Down Operation [Service Mode: 01] . 63
12.4 Flow Switch .................................................. 63
12.5 Indoor Unit Safety ........................................ 64
12.6 Auto Restart Control .................................... 64
12.7 Indication Panel ........................................... 64
12.8 Indoor Back-Up Heater Control ................... 65
12.9 Tank Booster Heater Control ....................... 66
12.10 Base Pan Heater Control (Optional) ............ 66
12.11 Sterilization Mode ........................................ 67
12.12 Quiet Operation ............................................ 67
12.13 Anti Freeze Control ...................................... 68
12.14 Solar Operation (Optional) ........................... 69
12.15 External Room Thermostat Control
(Optional) ..................................................... 72
12.16 Three Ways Valve Control ........................... 73
12.17 Two Ways Valve Control ............................. 73
12.18 External OFF/ON Control ............................ 74
12.19 Holiday Mode ............................................... 75
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12.20 Dry Concrete Function .................................75
13. Protection Control ............................................76
13.1 Protection Control for All Operations ...........76
13.2 Protection Control for Heating Operation.....78
14. Servicing Mode .................................................79
14.1 Remove The Cabinet Front Plate ................79
14.2 Test Run ......................................................79
14.3 Proper Pump Down Procedure ....................79
14.4 How To Adjust Water Flow Rate ..................80
14.5 Expansion Vessel Pre Pressure Checking ..80
14.6 Dry Concrete [SERVICE MODE: 03] ...........81
14.7 EEPROM Factory Default Data Setup
Procedure ....................................................81
15. Maintenance Guide...........................................82
16. Troubleshooting Guide ....................................84
16.1 Refrigeration Cycle System .........................84
16.2 Relationship Between The Condition Of The
Mono Bloc Unit And Pressure And Electric
Current .........................................................85
16.3 Breakdown Self Diagnosis Function ............86
16.4 Error Codes Table ........................................87
16.5 Self-diagnosis Method .................................89
17. Disassembly and Assembly Instructions ... 126
17.1 To Remove The Cabinet Front Plate ........ 126
17.2 To Remove The Cabinet Top Plate .......... 126
17.3 To Remove The Cabinet Rear Plate ......... 127
17.4 To Remove Pressure Gauge .................... 127
17.5 To Remove RCCB .................................... 127
17.6 To Remove Transformer and Electronic
Controller Board ........................................ 128
17.7 To Remove Pressure Relief Valve and Air
Purge Valve .............................................. 128
17.8 To Remove Flow Switch ........................... 129
17.9 To Remove Water Pump .......................... 129
17.10 To Remove Bottle Complete ..................... 129
18. Technical Data ............................................... 130
18.1 Operation Characteristics ......................... 130
18.2 Heating Capacity Table............................. 132
19. Exploded View and Replacement Parts List 133
19.1 (Refrigerant System) ................................. 133
19.2 (Water System) ......................................... 138
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