Use and Care Manual
Table Of Contents
- Foreword
- Safety Notice
- CONTENTS
- Safety Notice on Maintenance
- Safety Notice on Operation
- 1 Product Introduction
- NOTE: 1 Ton =12000Btu/h = 3.517kW 1.2 Electrical Parameters
- 2 Control
- 3 Troubleshooting
- 3.1 Wiring Diagrams
- 3.2 PCB Layout
- 3.3 Error Code
- 3.4 Troubleshooting
- 3.4.1 “E1” Compressor High Pressure Protection
- 3.4.2 “E3” Compressor Low-pressure Protection, Refrigerant Shortage Protection, Refrigerant Recovery Mode
- 3.4.3 “E4” Compressor Air Discharge High-temperature Protection
- 3.4.4 “F2” Condenser Temperature Sensor Error
- 3.4.5 “F3” Outdoor Ambient Temperature Sensor Error
- 3.4.6 “F4” Discharge Temperature Sensor Error
- 3.4.7 “F6” ODU Tube Temperature Sensor Error
- 3.4.8“EE” ODU Memory Chip Error
- 3.4.9 “H4” Overload
- 3.4.10 “H5” IPM Protection
- 3.4.11 “H6” DC Fan Error
- 3.4.12 “H7” Driver Out-of-Step Protection
- 3.4.13 “HC” PFC Protection
- 3.4.14 “Lc” Startup Failure
- 3.4.15 “P0” Driver Reset Protection
- 3.4.16 “P5” Over-Current Protection
- 3.4.17 “P6” Master Control and Driver Communication Error
- 3.4.18 “P7” Driver Module Sensor Error
- 3.4.19 “P8” Driver Module High Temperature Protection
- 3.4.20 “PA” AC Current Protection
- 3.4.21 “Pc” Driver Current Error
- 3.4.22 “PL” Bus Low-Voltage Protection
- 3.4.23 “PH” Bus High-Voltage Protection
- 3.4.24 “PU” Charge Loop Error
- 3.4.25 “ee” Drive Memory Chip Error
- 3.5 Failures Not Caused by Errors
- 4 Maintenance
- Appendices
- 1 Resistance/Temperature Lists of Temperature Sensors
- 1.1 Voltage List of 15 KΩ Temperature Sensors (including ODU temperature sensors)
- 1.2 Voltage List of 20 KΩ Pipeline Temperature Sensors (including temperature sensors for defroster, IDU and ODU pipes)
- 1.3 Voltage List of 50 KΩ Discharge Temperature Sensors (including discharge air temperature sensor)
- 2 Temperature/Pressure List of Refrigerant
- 3 Operation Tools
MRCOOL DC INVERTER COOLING ONLY CONDENSING UNIT
92
Temperature (℃)
Resistance (kΩ)
Voltage (V)
Temperature (℃)
Resistance (kΩ)
Voltage (V)
15
23.6
1.282
106
0.848
3.123
16
22.53
1.319
107
0.825
3.128
17
21.51
1.356
108
0.802
3.133
18
20.54
1.393
109
0.779
3.137
19
19.63
1.429
110
0.758
3.141
20
18.75
1.467
111
0.737
3.145
21
17.93
1.503
112
0.717
3.15
22
17.14
1.54
113
0.697
3.153
23
16.39
1.577
114
0.678
3.157
24
15.68
1.613
115
0.66
3.161
25
15
1.65
116
0.642
3.165
26
14.36
1.686
117
0.625
3.168
27
13.74
1.722
118
0.608
3.171
28
13.16
1.758
119
0.592
3.175
29
12.6
1.793
120
0.577
3.178
30
12.07
1.829
121
0.561
3.181
31
11.57
1.863
122
0.547
3.184
32
11.09
1.897
123
0.532
3.187
33
10.63
1.931
124
0.519
3.19
34
10.2
1.964
125
0.505
3.192
35
9.779
1.998
126
0.492
3.195
36
9.382
2.03
127
0.48
3.198
37
9.003
2.062
128
0.467
3.2
38
8.642
2.094
129
0.456
3.203
39
5.997
2.125
130
0.444
3.205
41
7.653
2.185
131
0.433
3.207
42
7.352
2.215
132
0.422
3.21
43
7.065
2.243
133
0.412
3.212
44
6.791
2.272
134
0.401
3.214
45
6.529
2.299
135
0.391
3.216
46
6.278
2.326
136
0.382
3.218
47
6.038
2.353
137
0.372
3.22
48
5.809
2.379
138
0.363
3.222
49
5.589
2.404
139
0.355
3.224
50
5.379
2.429
140
0.346
3.226
51
5.179
2.453
141
0.338
3.227
52
4.986
2.477
142
0.33
3.229
53
4.802
2.5
143
0.322
3.231
54
4.625
2.522
144
0.314
3.232
55
4.456
2.544
145
0.307
3.234
56
4.294
2.566
146
0.299
3.235
57
4.139
2.586
147
0.292
3.237
58
3.99
2.607
148
0.286
3.238
59
3.848
2.626
149
0.279
3.24
60
3.711
2.646
150
0.273
3.241