Daikin BRC7E61W Service Manual Page 64
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SiENBE34-703 Protection Control
Function 53
4.2 Low Pressure Protection Control
This low pressure protection control is used to protect compressors against the transient
decrease of low pressure.
[In cooling operation]
[In heating operation]
Pe: LP pressure sensor detection
value
Low pressure not limited
Pe>0.39MPa
Pe<0.25MPa
Low pressure
limited
Hot gas SVP = OFF
Hot gas SVP = ON
Pe>0.30MPa Pe<0.15MPa
When occurring 3 times within 30 min.,
the malfunction code "E4" is output.
36Hz Unload
Pe<0.07MPa
Low pressure
standby
• Ts-Teg < 8deg
• Pe>0.06MPa
INV upper limit frequency :
3-step down from current
compressor frequency
INV upper limit frequency:
1-step up from current
compressor frequency
Hot gas SVP = OFF
Hot gas SVP = ON
Pe< 0.07MPa
Pe
< 0.12MPa Pe> 0.17MPa
Pe
> 0.09MPa
Current step limited
Low pressure not limited
Low pressure limited
Pe<0.17MPa After 10 sec.
After 15 sec.Pe>0.20MPa
Low pressure
standby
When occurring 3 times within 30 min.,
the malfunction code "E4"
is output.
Pe: LP pressure sensor detection
value
&
or
- Service 1
- Heat Pump 2
- Table of Contents iii 4
- 1. Introduction 6
- 1.1.3 Inspection after Repair 8
- 1.1.4 Using Icons 9
- 1.1.5 Using Icons List 9
- 1.2 PREFACE 10
- Introduction SiENBE34-703 11
- General Information 12
- *Indoor Units 13
- Outdoor Units 13
- 2. External Appearance 14
- 3. Capacity Range 15
- Specifications 16
- 1. Specifications 17
- SiENBE34-703 Specifications 18
- Specifications 7 18
- 1.2 Indoor Units 19
- Specifications 9 20
- Specifications SiENBE34-703 21
- 10 Specifications 21
- Specifications 11 22
- 12 Specifications 23
- Specifications 13 24
- 14 Specifications 25
- ()()()() 26
- 16 Specifications 27
- Specifications 17 28
- 18 Specifications 29
- Ceiling Mounted Built-in Type 30
- Ceiling Mounted Duct Type 34
- Ceiling Suspended Type 35
- Wall Mounted Type 36
- Floor Standing Type 38
- Concealed Floor Standing Type 40
- Specifications 31 42
- BEV Units 43
- List of Electrical and 44
- Functional Parts 44
- 1.1 Outdoor Unit 45
- Refrigerant Circuit 46
- 1. Refrigerant Circuit 47
- Refrigerant Circuit 37 48
- 2. Functional Parts Layout 49
- Function 50
- 1. Operation Mode 51
- 2. Basic Control 52
- 2.2 Compressor PI Control 53
- Fan Steps 55
- 3. Special Control 56
- 3.2 Oil Return Operation 57
- 3.3 Defrosting Operation 59
- 3.5 Restart Standby 61
- 3.6 Stopping Operation 62
- 4. Protection Control 63
- [In cooling operation] 64
- [INV compressor] 65
- Function 55 66
- 5. Other Control 67
- 6.1 Drain Pump Control 68
- 58 Function 69
- Posición de 70
- 60 Function 71
- Function 61 72
- 6.4 Freeze Prevention 73
- · lapse of 3 minutes 75
- · [TH2]>34°C 75
- · "Tc">52°C 75
- Test Operation 76
- 1. Test Operation 77
- 1.1.3 Check Operation 78
- Test Operation SiENBE34-703 79
- 68 Test Operation 79
- Outdoor unit PC board 81
- 3. Field Setting 82
- First code No 83
- Second code No 83
- Mode No 83
- Test Operation 73 84
- 74 Test Operation 85
- ∗1 Static pressure selection 86
- F2 T1 T2 87
- Air Flow Direction Setting 89
- Setting Table 90
- GROUP NO 91
- MODE NO 91
- FIELD SET 91
- BRC7C Type 92
- BRC7E Type 92
- BRC4C Type 92
- Group No. Setting 92
- (Local Setting) 93
- How to Select 94
- Operation Mode 94
- 3.2.1 Setting by Dip Switches 95
- Test Operation 85 96
- 86 Test Operation 97
- H1P H2P H3P H4P H5P H6P H7P 97
- LED indication 97
- Test Operation 87 98
- SiENBE34-703 Field Setting 100
- Test Operation 89 100
- Field Setting SiENBE34-703 101
- 90 Test Operation 101
- SET (BS2) button 102
- 977 7997 103
- 9 797997 103
- 977 7979 103
- MALFUNC 104
- C/H select 105
- Test Operation 95 106
- Setting of Demand Operation 107
- Test Operation 97 108
- : ON ): OFF 9: Blink 109
- Service port 110
- 100 Test Operation 111
- 8:ON 3:OFF 9:BLINK) 112
- CHECK OPERATION FUNCTION 112
- 102 Test Operation 113
- Troubleshooting 114
- SiENBE34-703 115
- 104 Troubleshooting 115
- Circuit breaker 116
- 108 Troubleshooting 119
- Troubleshooting 109 120
- “Advance” button 121
- “Backward” button 121
- Operation Button 123
- Normal operation 124
- Field set mode 124
- Service mode 124
- Troubleshooting 115 126
- 118 Troubleshooting 129
- Troubleshooting 119 130
- 120 Troubleshooting 131
- Troubleshooting 121 132
- All indoor unit models 133
- ! Improper field set 133
- Troubleshooting 123 134
- System (S1L) 135
- ! Fan motor lock 137
- Troubleshooting 127 138
- ! Defect of connecting cable 140
- Troubleshooting 131 142
- 132 Troubleshooting 143
- Heat Exchanger 144
- 134 Troubleshooting 145
- Suction Air 146
- 136 Troubleshooting 147
- Troubleshooting 137 148
- 138 Troubleshooting 149
- Troubleshooting 139 150
- Troubleshooting 141 152
- Troubleshooting 143 154
- 144 Troubleshooting 155
- Troubleshooting 145 156
- Temperature 158
- 148 Troubleshooting 159
- Outdoor Air 160
- Thermistor (R2T) 161
- Troubleshooting 151 162
- Outdoor Unit Heat Exchanger 163
- Outdoor Unit Liquid Pipe 164
- 154 Troubleshooting 165
- Troubleshooting 155 166
- 156 Troubleshooting 167
- Troubleshooting 157 168
- Temperature Rise 169
- Compressor inspection 170
- 160 Troubleshooting 171
- Troubleshooting 161 172
- Inverter and Control PC Board 173
- Inverter Circuit 174
- 164 Troubleshooting 175
- 166 Troubleshooting 177
- RXYSQ4~6P 179
- Troubleshooting 169 180
- Troubleshooting 171 182
- 172 Troubleshooting 183
- AII indoor unit models 184
- Troubleshooting 175 186
- Troubleshooting 177 188
- Troubleshooting 179 190
- Undefined 191
- Troubleshooting 181 192
- 4.2 “M1” PC Board Defect 193
- Centralized remote control 194
- Centralized Control 195
- OFF Control 198
- Is the transmission wiring 199
- (Repeats Single Blink) 200
- Troubleshooting 191 202
- (Repeats Double Blink) 203
- Troubleshooting 193 204
- 194 Troubleshooting 205
- 196 Troubleshooting 207
- Appendix 208
- 1. Piping Diagrams 209
- 1.2 Indoor Unit 210
- 4D043864H 211
- FXUQ + BEVQ 212
- Indoor Unit 212
- Connection Unit 212
- TO IN/D UNIT 213
- TO OUT/D UNIT 213
- 2.2 Field Wiring 214
- 2.3 Indoor Unit 215
- FXCQ40 / 50 / 80 / 125M8V3 216
- Wiring Diagrams SiENBE34-703 217
- 206 Appendix 217
- SiENBE34-703 Wiring Diagrams 218
- Appendix 207 218
- 208 Appendix 219
- FXDQ20P / 25P / 32P 220
- FXDQ20 / 25M8V3 221
- Appendix 211 222
- POWER SUPPLY 223
- FXHQ32MA / 63MA / 100MAVE 224
- INDOOR UNIT 225
- Appendix 215 226
- FXUQ71MA / 100MA / 125MAV1 227
- BEVQ71MA / 100MA / 125MAVE 228
- 3. Option List 229
- Building management system 230
- C: 3D045727B 231
- SiENBE34-703 Option List 232
- Appendix 221 232
- 4. Example of Connection 233
- Branch with refnet header 234
- 224 Appendix 235
- Characteristics 236
- Outdoor Unit 237
- Thermistors for 237
- Discharge Pipe 237
- 6. Pressure Sensor 238
- Transistors Modules 239
- Appendix 229 240
- 230 Appendix 241
- Precautions for New 242
- Refrigerant (R-410A) 242
- 1.1 Outline 243
- 1.2 Refrigerant Cylinders 245
- 1.3 Service Tools 246
- Flare gauge 247
- For class-1: R-407C 247
- For class-2: R-410A 247
- Dimension A 247
- (Hose with ball valve) 250
- Removal Procedure 252
- 1. RXYSQ4 · 5 · 6 P7Y1B 253
- Front panel (1) 254
- Discharge grill 254
- Reinforce plate 254
- Ambient air 255
- Propeller fan 256
- Nut with a washer 256
- 246 Removal Procedure 257
- Procedure Points 257
- Terminal cover 258
- Removal Procedure 249 260
- 250 Removal Procedure 261
- Drawings & Flow Charts 264
- ÉSiENBE34-703kËÍ 266
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