Table Of Contents - Midea MRCT-075CWN1-D(C) Technical & Service Manual

Table of Contents

Content2
Part. 1 General Information3
Product Lineup4
External Appearances4
Nomenclatures5
Table Of Contents6
Part. 2 Performances6
Features7
Design Flexibility7
Durable Construction7
Reliable Scroll Compressor7
Easy To Installation8
System Self-Diagnostic Function8
Specifications9
Dimensions Drawings17
Wiring Diagrams27
Performance Data32
Cooling Capacity32
Electrical Data47
Fan Performance Data48
Blower Drive Options49
Example For Selection Process49
Selection Of New Desired Point49
Refrigerant Cycle Diagram59
Operation Limits60
Noise Criteria (Nc) Curves61
Accessories63
Part. 3 Installations64
General Information65
Recommendations66
Horizontal Airflow Application66
Clearances66
Lifting67
Installation68
For Ground Level Installations68
Condensate Drainage69
Duct Work70
Electrical Wiring70
Wiring Provision70
Main Power Supply Parameters71
Power Supply Wiring Diagram72
Wired Controller Wiring Diagram (Standard Wired Controller)72
Wired Controller Wiring Diagram (Optional Wired Controller)73
Start-Up73
Before Starting Unit73
Starting The Unit74
Shut-Down The Unit74
Safety Control74
Functions74
Error & Protection Code75
Phase Sequence Error Or Phase Default77
Compressor Sequence Error Or Phase Default77
Evaporator Pipe Temperature Sensor (T2) Error78
Condenser Pipe Temperature Sensor (T3) Error78
Ambient Temperature Sensor (T4) Error78
Indoor Side Room Temperature Sensor (T1) Error78
High Pressure Protection79
High Discharge Temperature Protection79
Wired Controller Communication Error79
Low Pressure Protection80
Eeprom Error80
Over-Current Protection Of Indoor Side Fan Motor81
Comprehensive Protection Of Outdoor Side Fan Motor81
High Temperature Protection Of Condenser82
Low Temperature Protection Of Evaporator82
Anti-Freezing Protection Of Evaporator82
Protection Of Outdoor Ambient Temperature83
Maintenance83
Regular Maintenance83
Regulating Belt Of Tension84
Belt Tension Is Measured By Belt Tension Indicator84
Air Intake Filter Clean (The Filter Should Be Customized)85
Dismantle The Air Filter85
Clean The Air Filter85
Re-Install The Air Filter85
Appendix: - Temperature Sensor87
Ehk Parameter90
Airflow Pressure Drop90
Appendix: - Ehk (Electrical Heater Kits)90
Assemble91
Wiring92
Electric Diagram – 15Kw/20Kw Ehk:92
Electric Diagram – 30Kw/40Kw Ehk93
Part. 4 Controller95
Wired Controller: Kjr-12B96
Wired Controller Specifications96
Introduction Of Indicators Function96
Operation Mode Indication96
Timer On/Off97
Follow Me Function97
On/Off Indication97
Lock97
Introduction Of Buttons98
Mode Button98
Timer On Button98
Timer Off Button98
Follow Me Button99
Auxil Heater Button99
Reset Button99
On/Off Button99
Operation100
Automatic Operation100
Cool / Heat / Fan Only Mode Operation100
Dry Operation100
Timer Setting101
Timer Setting – Timer On Only101
Timer Setting – Timer Off Only101
Timer-On And Timer-Off Both101
Installation Of Wired Controller102
Change Timer102
Preparing At Site103
Wiring Principle103
Dimension Of Rear Cover As Following Picture (Unit: Mm)104
Wired Controller: Kjr-25B105
Operation Instructions108
Fan Operation108
Cooling Operation109
Heating Operation109
Emergency Operation109
Day And Time Setting110
Reviewing The Current Temperature Setting111
Energy Monitor111
Filter Monitor112
Keyboard Lock112
Low Battery Warning113
Electric / Gas Switch113
Wired Controller: Kjr-23B115
Operation Introduction116
System Selector Switch116
Fan Switch116
Review Current Set Temperature116
Setting New Temperature117
Span Setting117
Backlight118
Changing The Battery118
Auto Turn-On118
Wiring Of The Wired Controller119
Mount Wall-Plate And Controller121
Centralized Controller Specifications122
Performance Features122
Centralized Controller: Md-Ccm03(A) (Optional)122
Keypad Of Centralized Controller123
System Composition128
Keywords And General Function Description129
Power On Or Reset129
Network Area Address Of Centralized Controller129
State Indication129
Locking Of Centralized Controller130
Mode Locking Function130
Emergent Shutdown And Compulsory Startup130
General Display Data Entries131
General Display Data Is Displayed In All Display Pages131
Data Display Handling131
Indoor Temperature Display132
Liquid Crystal Matrix Display Description132
Lcd Display Description133
Description Of The Standby Page133
Description Of The Query Page133
Description Of The Setting Page134
Fault Page Display Description134
Fault Code Table135
Protection Code Table135
Outlook Of Md-Nim01136
Dimension Of Md-N1M01136
The Installation Of Centralized Controller137
The Wire Connection138
System Wiring Instruction139
Wiring Diagram Of Building Network Air Conditioning System139
Wiring Diagram With Good Communication Effect139