Name: Midea MCA3U-12HRFN1-M(C)
Brand: Midea
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2.3.4.7. Drain pump (Optional)

 Built-in drain pump can lift the water to 750mm upmost, which widens the drainage piping range.

Max 750mm

Table of Contents1
Table of Contents2
Safety Precaution4
Warning4
Part Names and Features7
Model Names of Indoor/Outdoor Units7
Product View and Parts Identification8
Part Names of Indoor/Outdoor Units8
Features13
Dimension23
Indoor Unit23
Outdoor Unit32
Service Space37
Indoor Unit37
Outdoor Unit40
Refrigerant Cycle Diagram41
Wiring Diagram44
Indoor Unit44
Some Connectors Introduce50
Micro-Switch Introduce57
Outdoor Unit Diagrams76
Electric Characteristics97
Sound Level98
Indoor Unit98
Outdoor Unit101
Accessories List102
Duct Units102
Cassette Units102
The Specification of Power104
Field Wiring105
Installation Details107
Location Selection107
Indoor Unit Installation107
Hang Indoor Unit108
Adjust the Air Inlet Direction109
Fresh Air Duct Installation109
Compact Cassette Indoor Unit Installation109
Install the Pendant Bolt110
Install the Main Body110
Install the Panel110
Console Indoor Unit Installation111
Service Space for Indoor Unit111
Ceiling-Floor Unit Installation112
Slim Cassette Indoor Unit Installation113
HESP Duct Indoor Unit Installation115
New Cassette Indoor Unit Installation116
Outdoor Unit Installation118
Service Space for Outdoor Unit118
Refrigerant Pipe Installation119
Maximum Pipe Length and Height Drop119
The Procedure of Connecting Pipes119
First-Time Installation120
Air Purging Using Refrigerant121
Adding Refrigerant after Long-Term System Operation121
Re-Installation When Indoor Unit Requires Repairs122
Collecting the Refrigerant into the Outdoor Unit122
Air Purging by the Refrigerant122
Re-Installation When the Outdoor Unit Requires Repairs123
Evacuation for the Whole System123
Drainage Pipe Installation124
Individual Design of Drainage Pipe System124
Relationship between Water Flowrate and Capacity of Indoor Unit124
Drainage Test125
Water Leakage Test125
Water Discharge Test125
Vacuum Drying and Leakage Checking126
Additional Refrigerant Charge127
Selection of Vacuum Pump127
Operation Procedure for Vacuum Drying127
Special Vacuum Drying127
Engineering of Insulation128
Insulation of Refrigerant Pipe128
Insulation Material Selection for Refrigerant Pipe128
Insulation of Drainage Pipe129
Engineering of Electrical Wiring129
Test Operation129
Operation Characteristics131
Electronic Function132
Display Function132
Main Protection132
Icon Explanation on Indoor Display Board (New Cassette)132
Abbreviation132
Indoor Fan Delayed Open Function133
Operation Modes and Functions134
Condenser High Temperature T3 Protection134
Heating Mode135
Outdoor Fan Running Rules135
Indoor Fan Running Rules135
Defrosting Mode135
Defrosting Action136
Condition of Ending Defrosting136
Evaporator Coil Temperature Protection137
Auto-Mode137
Timer Function137
Sleep Function Mode138
Auto-Restart Function138
Follow Me138
Drain Pump Control138
Electrical Energy Consumption Control Function139
Silence139
ECO Function139
Breeze Away Function139
Point Check Function140
Error Code of Engineer Mode145
Troubleshooting147
Indoor Unit Error Display148
Error Display on Two Way Communication Wired Controller150
Diagnosis and Solution151
EEPROM Parameter Error Diagnosis and Solution151
Communication Malfunction between Indoor and Outdoor Units152
Fan Speed Malfunction Diagnosis and Solution155
Open or Short Circuit of Temperature Sensor Diagnosis and Solution161
Refrigerant Leakage Detection Diagnosis and Solution (EC)162
Water-Level Alarm Malfunction Diagnosis and Solution163
IPM Malfunction or IGBT Over-Strong Current Protection164
Over-Voltage or Under-Voltage Protection Diagnosis and Solution167
High Temperature Protection of Compressor Top Diagnosis and Solution168
High Temperature Protection of IPM Board Diagnosis and Solution169
Inverter Compressor Drive Error Diagnosis and Solution170
Outdoor IPM Module Temperature Sensor Malfunction171
J0 Malfunction172
J1 Malfunction173
J2 Malfunction174
J3 Malfunction175
J4 Malfunction176
P6/J5 Malfunction177
J6/P6 Malfunction179
J8 Malfunction181
Communication Malfunction between Indoor Unit and Auto-Lifting Panel183
Auto-Lifting Panel Malfunction184
Current Overload Protection185
Communication Malfunction between Indoor Two Chips187
Main Parts Check188
Temperature Sensor Checking188
Disassembly Instructions189
Indoor Unit Disassembly189
Console Unit Disassembly201
Duct Unit Disassembly207
Outdoor Unit Disassembly211

Midea MCA3U-12HRFN1-M(C) User Manual

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Midea MCA3U-12HRFN1-M(C) Specifications

Related product manuals

Brand	Midea
Model	MCA3U-12HRFN1-M(C)
Category	Air Conditioner
Language	English