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
95
Temperature (℃)
Resistance (kΩ)
Voltage (V)
Temperature (℃)
Resistance (kΩ)
Voltage (V)
43
9.42
2.243
139
0.4727
3.224
44
9.054
2.272
140
0.4613
3.226
45
8.705
2.299
141
0.4502
3.227
46
8.37
2.326
142
0.4394
3.229
47
8.051
2.353
143
0.4289
3.231
48
7.745
2.379
144
0.4187
3.232
49
7.453
2.404
145
0.4088
3.234
50
7.173
2.429
146
0.3992
3.235
51
6.905
2.453
147
0.3899
3.237
52
6.648
2.477
148
0.3808
3.238
53
6.403
2.5
149
0.3719
3.24
54
6.167
2.522
150
0.3633
3.241
55
5.942
2.544
151
0.3549
3.242
56
5.726
2.565
152
0.3468
3.244
57
5.519
2.586
153
0.3389
3.245
58
5.32
2.607
154
0.3312
3.246
59
5.13
2.626
155
0.3237
3.247
60
4.948
2.646
156
0.3164
3.249
61
4.773
2.664
157
0.3093
3.25
62
4.605
2.682
158
0.3024
3.251
63
4.443
2.7
159
0.2956
3.252
64
4.289
2.717
160
0.2891
3.253
65
4.14
2.734
-
-
-
1.3 Voltage List of 50 KΩ Discharge Temperature Sensors (including
discharge air temperature sensor)
Temperature (℃)
Resistance (kΩ)
Voltage (V)
Temperature (℃)
Resistance (kΩ)
Voltage (V)
-30
911.56
0.036
61
11.736
1.518
-29
853.66
0.038
62
11.322
1.548
-28
799.98
0.041
63
10.925
1.577
-27
750.18
0.043
64
10.544
1.606
-26
703.92
0.046
65
10.178
1.635
-25
660.93
0.049
66
9.8269
1.664
-24
620.94
0.052
67
9.4896
1.693
-23
583.72
0.056
68
9.1655
1.722
-22
549.04
0.059
69
8.9542
1.741
-21
516.71
0.063
70
8.5551
1.778
-20
486.55
0.066
71
5.9676
1.806
-19
458.4
0.07
72
7.9913
1.834
-18
432.1
0.075
73
7.7257
1.862
-17
407.51
0.079
74
7.4702
1.889
-16
384.51
0.084
75
7.2245
1.916