Panasonic Secon WH-MXC16J9E8, Service Manual

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TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 4
2. Precaution for Using R32 Refrigerant .............. 6
3. Specifications ................................................... 11
4. Features ............................................................. 14
5. Location of Controls and Components .......... 15
5.1 Indoor Unit ................................................... 15
6. Dimensions ....................................................... 34
6.1 Mono Bloc Unit ............................................. 34
7. Refrigeration and Water Cycle Diagram ........ 35
7.1 Standard System (Optional PCB not
connected) ................................................... 36
7.2 Advance System (Optional PCB connected) ...
.................................................................... 36
8. Block Diagram .................................................. 37
9. Wiring Connection Diagram ............................ 38
9.1 Water System .............................................. 38
9.2 Refrigerant System ...................................... 39
10. Electronic Circuit Diagram .............................. 40
10.1 Water System .............................................. 40
10.2 Refrigerant System ...................................... 41
11. Printed Circuit Board ....................................... 42
11.1 Water System .............................................. 42
11.2 Refrigerant System ...................................... 44
12. Installation Instruction ..................................... 46
12.1 Mono Bloc Unit ............................................. 46
12.2 Variation of System ...................................... 59
12.3 How to Fix External Device .......................... 66
12.4 System Installation ....................................... 69
12.5 Service and Maintenance ............................ 81
13. Operation and Control ..................................... 82
13.1 Basic Function ............................................. 82
13.2 Water Pump ................................................. 94
13.3 Indoor Unit Safety ........................................ 98
13.4 Auto Restart Control .................................... 98
13.5 Indication Panel ........................................... 98
13.6 Indoor Back-Up Heater Control ................... 99
13.7 Tank Heater Control ...................................100
13.8 Base Pan Heater Control (Optional) ..........102
13.9 Heater Turn ON/OFF priority Control .........103
13.10 Force Heater Mode ....................................103
13.11 Powerful Operation ....................................105
13.12 Quiet Operation ..........................................105
13.13 Sterilization Mode ......................................106
13.14 Outdoor Ambient Thermo OFF Control .....106
13.15 Alternative Outdoor Ambient Sensor Control ..
..................................................................107
13.16 Force DHW mode ......................................107
13.17 SMART DHW mode ...................................108
13.18 DHW Capacity Setting ...............................108
13.19 Anti Freeze Control ....................................109
13.20 Solar Operation (Optional) ........................ 110
13.21 Boiler Bivalent Control .............................. 111
13.22 External Room Thermostat Control (Optional)
................................................................. 113
13.23 Three Ways Valve Control ........................ 114
13.24 Two Ways Valve Control........................... 115
13.25 External OFF/ON Control ......................... 115
13.26 External Compressor Switch (Optional PCB) ..
................................................................. 116
13.27 Heat/Cool Switch (Optional PCB) ............. 117
13.28 SG Ready Control (Optional PCB) ........... 118
13.29 Demand Control (Optional PCB) .............. 120
13.30 Holiday Mode ............................................ 120
13.31 Dry Concrete ............................................. 121
13.32 Flow Sensor .............................................. 121
14. Protection Control ......................................... 122
14.1 Protection Control for All Operations ........ 122
14.2 Protection Control for Heating Operation.........
................................................................. 124
14.3 Protection Control for Cooling Operation .........
................................................................. 126
15. Servicing Mode .............................................. 127
15.1 Expansion Vessel ⑦ Pre Pressure Checking .
................................................................. 127
15.2 Maintenance ............................................. 127
15.3 Pump Down Procedures ........................... 128
15.4 How To Adjust Pump Speed ..................... 129
15.5 How To Unlock Cool Mode ....................... 130
15.6 EEPROM Factory Default Data Setup
Procedure ................................................. 131
15.7 Dry Concrete Setup .................................. 132
16. Maintenance Guide........................................ 134
16.1 Maintenance Menu ................................... 136
17. Troubleshooting Guide ................................. 138
17.1 Refrigeration Cycle System ...................... 138
17.2 Relationship between the Condition of the Air-
to-Water Heatpump Indoor and Outdoor Units
and Pressure and Electric Current ............ 139
17.3 Breakdown Self Diagnosis Function ......... 140
17.4 Error Codes Table ..................................... 142
17.5 Self-diagnosis Method .............................. 144
18. Disassembly and Assembly Instructions ... 190
18.1 To Remove The Cabinet Front Plate ........ 190
18.2 To Remove The Cabinet Top Plate .......... 190
18.3 To Remove The Cabinet Rear Plate ......... 191
18.4 To Remove Pressure Gauge .................... 191
18.5 To Remove Water System Electronic
Controller Board ........................................ 192
18.6 To Remove Air Purge Valve ..................... 193
18.7 To Remove Flow Sensor .......................... 193
18.8 To Remove Water Pump .......................... 194
18.9 To Remove Heater .................................... 195
18.10 To Remove Filter ...................................... 196