WH-SDC12H6E5, WH-SDC16H6E5, WH-UD12HE5, WH-UD16HE5 - Panasonic Air Conditioner Service Manual (repair manual). Page 2

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TABLE OF CONTENTS 
1.
 
Safety Precautions ............................................. 4
 
2.
 
Specifications ..................................................... 7
 
2.1
 
WH-SDC12H6E5 WH-UD12HE5 ................... 7
 
2.2
 
WH-SDC16H6E5 WH-UD16HE5 ................. 10
 
3.
 
Features ............................................................. 13
 
4.
 
Location of Controls and Components .......... 14
 
4.1
 
Indoor Unit ................................................... 14
 
4.2
 
Outdoor Unit ................................................. 38
 
5.
 
Dimensions ....................................................... 39
 
5.1
 
Indoor Unit ................................................... 39
 
5.2
 
Outdoor Unit ................................................. 40
 
6.
 
Refrigeration and Water Cycle Diagram ........ 41
 
6.1
 
Standard System (Optional PCB not 
connected) ................................................... 42
 
6.2
 
Advance System (Optional PCB connected) ... 
  .................................................................... 42
 
7.
 
Block Diagram .................................................. 43
 
8.
 
Wiring Connection Diagram ............................ 44
 
8.1
 
Indoor Unit ................................................... 44
 
8.2
 
Outdoor Unit ................................................. 45
 
9.
 
Electronic Circuit Diagram .............................. 46
 
9.1
 
Indoor Unit ................................................... 46
 
9.2
 
Outdoor Unit ................................................. 47
 
10.
 
Printed Circuit Board ....................................... 48
 
10.1
 
Indoor Unit ................................................... 48
 
10.2
 
Outdoor Unit ................................................. 50
 
11.
 
Installation Instruction ..................................... 52
 
11.1
 
Indoor Unit ................................................... 52
 
11.2
 
Variation of system ...................................... 60
 
11.3
 
System Installation ....................................... 72
 
11.4
 
Service and maintenance ............................ 83
 
11.5
 
Outdoor Unit ................................................. 84
 
12.
 
Operation and Control ..................................... 91
 
12.1
 
Basic Function ............................................. 91
 
12.2
 
Water Pump ...............................................105
 
12.3
 
Indoor Unit Safety ......................................109
 
12.4
 
Auto Restart Control ..................................109
 
12.5
 
Indication Panel .........................................109
 
12.6
 
Indoor Back-Up Heater Control .................110
 
12.7
 
Tank Heater Control ...................................112
 
12.8
 
Base Pan Heater Control (Optional) ..........114
 
12.9
 
Heater Turn ON/OFF priority Control .........114
 
12.10
 
Force Heater Mode ....................................115
 
12.11
 
Powerful Operation ....................................116
 
12.12
 
Quiet Operation ..........................................117
 
12.13
 
Sterilization Mode ......................................117
 
12.14
 
Outdoor Ambient Thermo OFF Control .....118
 
12.15
 
Alternative Outdoor Ambient Sensor Control .. 
  ..................................................................119
 
12.16
 
Force DHW mode ......................................119
 
12.17
 
Anti Freeze Control ....................................120
 
12.18
 
Solar Operation (Optional) ........................  121
 
12.19
 
Boiler Bivalent Control .............................. 123
 
12.20
 
External Room Thermostat Control (Optional) 
  ................................................................. 125
 
12.21
 
Three Ways Valve Control ........................ 126
 
12.22
 
Two Ways Valve Control........................... 126
 
12.23
 
External OFF/ON Control ......................... 127
 
12.24
 
External Compressor Switch (Optional PCB) .. 
  ................................................................. 128
 
12.25
 
Heat/Cool Switch (Optional PCB) ............. 129
 
12.26
 
SG Ready Control (Optional PCB) ........... 130
 
12.27
 
Demand Control (Optional PCB) .............. 132
 
12.28
 
Holiday Mode ............................................ 133
 
12.29
 
Dry Concrete ............................................. 133
 
12.30
 
Flow Sensor .............................................. 133
 
13.
 
Protection Control ......................................... 134
 
13.1
 
Protection Control for All Operations ........ 134
 
13.2
 
Protection Control for Heating Operation.. 136
 
13.3
 
Protection Control for Cooling Operation .. 137
 
14.
 
Servicing Mode .............................................. 138
 
14.1
 
How to Take Out Front Plate .................... 138
 
14.2
 
Test Run ................................................... 138
 
14.3
 
Expansion Vessel Pre Pressure Checking ...... 
  ................................................................. 138
 
14.4
 
Pump Down Procedures ...........................  139
 
14.5
 
How To Adjust Pump Speed ..................... 140
 
14.6
 
How To Adjust Pump Speed ..................... 141
 
14.7
 
How To Unlock Cool Mode ....................... 142
 
14.8
 
EEPROM Factory Default Data Setup 
Procedure ................................................. 143
 
14.9
 
Dry Concrete Setup .................................. 144
 
15.
 
Maintenance Guide........................................ 146
 
15.1
 
Maintenance for Water Filter Set .............. 147
 
16.
 
Troubleshooting Guide .................................  149
 
16.1
 
Refrigeration Cycle System ...................... 149
 
16.2
 
Relationship between the Condition of the Air-
to-Water Heatpump Indoor and Outdoor Units 
and Pressure and Electric Current ............ 150
 
16.3
 
Breakdown Self Diagnosis Function ......... 151
 
16.4
 
Error Codes Table ..................................... 153
 
16.5
 
Self-diagnosis Method .............................. 155
 
17.
 
Disassembly and Assembly Instructions ... 206
 
17.1
 
To Remove Front Plate ............................. 206
 
17.2
 
To Remove Pressure Gauge .................... 206
 
17.3
 
To Open Control Board Cover ..................  207
 
17.4
 
To Remove Control Panel ........................ 207
 
17.5
 
To Remove RCCB .................................... 208
 
17.6
 
To Remove Transformer and Electronic 
Controller Board ........................................  208
 
17.7
 
To Open Control Board ............................. 209
 
17.8
 
To Remove Pressure Relief Valve, Air Purge 
Valve and Flow Sensor .............................  209
 
17.9
 
To Remove Water Pump and Bottle Complete
  ................................................................. 210
 
17.10
 
To Remove Filter ...................................... 211
 
 
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