Table Of Contents - Midea Mini VRF Technical & Service Manual

Table of Contents

Contents2
Part 1 General Information4
Product Lineup5
Outdoor Units5
Nomenclature6
Features7
High Efficient Dc Inverter Compressor7
High Performance Heat Exchanger7
Newly Designed Air Outlet Grill7
Wide Operation Temperature Range8
Flexible Piping Design8
Space Saving Design8
Auto Addressing9
More Convenient Piping Connector – Branch Box9
Four-Way Piping Connection9
Indoor Units Lineup10
Table Of Contents12
Part 2 Outdoor Units12
Specifications13
Dimensions15
Service Space16
Single Unit Installation16
Parallel Connect The Two Units Or Above16
Parallel Connect The Front With Rear Sides16
Piping Diagrams17
Low Pressure Liquid Receiver17
4-Way Valve17
Wiring Diagrams18
Field Wiring19
Single Phase Indoor Unit19
Capacity Tables20
Cooling20
Electric Characteristics44
Sound Levels45
Operation Limits46
Part 3 Installation47
Precautions48
Accessories49
Outdoor Unit Installation50
Installation Space Selection50
Installation Space50
Parallel Connect Two Units Or Above51
Water Outlet52
Piping Installation52
Piping Connection52
Allowable Length And Level Difference Of Refrigerant Pipe52
Refrigerant Pipe Selection54
The First Connecting Method54
The Second Connecting Method54
Indoor Unit Branch Pipes Selection54
Indoor Unit Main Pipes Selection55
Main Pipes Selection55
Outdoor Unit Pipe Connection55
Remove Dirt Or Water In The Piping55
Additional Refrigerant Charge56
Leak Detection56
Electric Wiring Installations56
Highlights Of Electrical Installation56
Selection Of Wiring57
Distribution Highlights Of Distribution Wiring57
Indoor Unit Power Supply Wiring58
Indoor/Outdoor Unit Signal Wire Wiring58
Outdoor Unit Wiring59
The Specification Of Power59
Indoor/Outdoor Unit Signal Wire59
Wiring Connection59
Test Running60
Precautions On Refrigerant Leakage60
Counter Measure Against Over High Thickness60
Part 4 Troubleshooting61
Pcb Ports Instructions62
Pcb Parts Instructions63
Function Setting Dial Switches Instruction64
Led On Pcb Instructions65
Error Code Table66
E9: Eeprom Malfunction67
H0: Communication Malfunction Betweem Ir341/Main Board69
E4: T3&T4 Sensor Malfunction70
E5: Voltage Protection Malfunction70
E6:Dc Fan Error71
E7: Discharge Sensor Malfunction72
P1 Malfunction: High Pressure Protection73
P2: Low Pressure Protection74
P3: Compressor Current Protection75
P4:Compressor Discharged Temperature Protection76
P5: Condenser High Temperature Protection77
P6: Ipm Module Protection78
Dc Generatrix Detection79
Voltage Check Of Dc Generatrix79
Voltage Check Of Module79
Compressor's Characteristics80
In Normal Situation81
Pe Malfunction: Evaporator T2 High Temperature Protection82
P8: Typhoon Protection83