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
94
Temperature (℃)
Resistance (kΩ)
Voltage (V)
Temperature (℃)
Resistance (kΩ)
Voltage (V)
-1
68.79
0.743
95
1.561
3.061
0
65.37
0.773
96
1.515
3.068
1
62.13
0.804
97
1.47
3.074
2
59.08
0.835
98
1.427
3.08
3
56.19
0.866
99
1.386
3.086
4
53.46
0.898
100
1.346
3.092
5
50.87
0.931
101
1.307
3.098
6
48.42
0.965
102
1.269
3.103
7
46.11
0.998
103
1.233
3.108
8
43.92
1.033
104
1.198
3.114
9
41.84
1.067
105
1.164
3.119
10
39.87
1.102
106
1.131
3.123
11
38.01
1.138
107
1.099
3.128
12
36.24
1.174
108
1.069
3.133
13
34.57
1.209
109
1.039
3.137
14
32.98
1.246
110
1.01
3.141
15
31.47
1.282
111
0.9825
3.145
16
30.04
1.319
112
0.9556
3.15
17
28.68
1.356
113
0.9295
3.153
18
27.39
1.393
114
0.9043
3.157
19
26.17
1.429
115
0.8799
3.161
20
25.01
1.466
116
0.8562
3.165
21
23.9
1.503
117
0.8333
3.168
22
22.85
1.54
118
0.8111
3.171
23
21.85
1.577
119
0.7895
3.175
24
20.9
1.614
120
0.7687
3.178
25
20
1.65
121
0.7485
3.181
26
19.14
1.686
122
0.7289
3.184
27
18.32
1.722
123
0.7099
3.187
28
17.55
1.758
124
0.6915
3.19
29
16.8
1.793
125
0.6736
3.192
30
16.1
1.828
126
0.6563
3.195
31
15.43
1.863
127
0.6395
3.198
32
14.79
1.897
128
0.6232
3.2
33
14.18
1.931
129
0.6074
3.203
34
13.59
1.965
130
0.5921
3.205
35
13.04
1.998
131
0.5772
3.207
36
12.51
2.03
132
0.5627
3.21
37
12
2.063
133
0.5487
3.212
38
11.52
2.094
134
0.5351
3.214
39
11.06
2.125
135
0.5219
3.216
40
10.62
2.155
136
0.509
3.218
41
10.2
2.185
137
0.4966
3.22
42
9.803
2.215
138
0.4845
3.222