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MCA3U-12HRFN1-M(C)
Midea MCA3U-12HRFN1-M(C) User Manual
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22
New Cassett
e Unit
s(24K
, 36K, 48K)
Capacity
(
Btu/h)
Unit
A
B
C
D
24K
mm
16
5
80
20
4
50
inch
6.
5
3.15
8.03
1.97
36K
mm
16
5
100
245
60
inch
6.
5
3.
64
9.65
2.36
48K
mm
16
5
100
287
60
inch
6.
5
3.
64
1
1.30
2.36
24
26
Table of Contents
Table of Contents
1
Table of Contents
2
Safety Precaution
4
Warning
4
Part Names and Features
7
Model Names of Indoor/Outdoor Units
7
Product View and Parts Identification
8
Part Names of Indoor/Outdoor Units
8
Features
13
Dimension
23
Indoor Unit
23
Outdoor Unit
32
Service Space
37
Indoor Unit
37
Outdoor Unit
40
Refrigerant Cycle Diagram
41
Wiring Diagram
44
Indoor Unit
44
Some Connectors Introduce
50
Micro-Switch Introduce
57
Outdoor Unit Diagrams
76
Electric Characteristics
97
Sound Level
98
Indoor Unit
98
Outdoor Unit
101
Accessories List
102
Duct Units
102
Cassette Units
102
The Specification of Power
104
Field Wiring
105
Installation Details
107
Location Selection
107
Indoor Unit Installation
107
Hang Indoor Unit
108
Adjust the Air Inlet Direction
109
Fresh Air Duct Installation
109
Compact Cassette Indoor Unit Installation
109
Install the Pendant Bolt
110
Install the Main Body
110
Install the Panel
110
Console Indoor Unit Installation
111
Service Space for Indoor Unit
111
Ceiling-Floor Unit Installation
112
Slim Cassette Indoor Unit Installation
113
HESP Duct Indoor Unit Installation
115
New Cassette Indoor Unit Installation
116
Outdoor Unit Installation
118
Service Space for Outdoor Unit
118
Refrigerant Pipe Installation
119
Maximum Pipe Length and Height Drop
119
The Procedure of Connecting Pipes
119
First-Time Installation
120
Air Purging Using Refrigerant
121
Adding Refrigerant after Long-Term System Operation
121
Re-Installation When Indoor Unit Requires Repairs
122
Collecting the Refrigerant into the Outdoor Unit
122
Air Purging by the Refrigerant
122
Re-Installation When the Outdoor Unit Requires Repairs
123
Evacuation for the Whole System
123
Drainage Pipe Installation
124
Individual Design of Drainage Pipe System
124
Relationship between Water Flowrate and Capacity of Indoor Unit
124
Drainage Test
125
Water Leakage Test
125
Water Discharge Test
125
Vacuum Drying and Leakage Checking
126
Additional Refrigerant Charge
127
Selection of Vacuum Pump
127
Operation Procedure for Vacuum Drying
127
Special Vacuum Drying
127
Engineering of Insulation
128
Insulation of Refrigerant Pipe
128
Insulation Material Selection for Refrigerant Pipe
128
Insulation of Drainage Pipe
129
Engineering of Electrical Wiring
129
Test Operation
129
Operation Characteristics
131
Electronic Function
132
Display Function
132
Main Protection
132
Icon Explanation on Indoor Display Board (New Cassette)
132
Abbreviation
132
Indoor Fan Delayed Open Function
133
Operation Modes and Functions
134
Condenser High Temperature T3 Protection
134
Heating Mode
135
Outdoor Fan Running Rules
135
Indoor Fan Running Rules
135
Defrosting Mode
135
Defrosting Action
136
Condition of Ending Defrosting
136
Evaporator Coil Temperature Protection
137
Auto-Mode
137
Timer Function
137
Sleep Function Mode
138
Auto-Restart Function
138
Follow Me
138
Drain Pump Control
138
Electrical Energy Consumption Control Function
139
Silence
139
ECO Function
139
Breeze Away Function
139
Point Check Function
140
Error Code of Engineer Mode
145
Troubleshooting
147
Indoor Unit Error Display
148
Error Display on Two Way Communication Wired Controller
150
Diagnosis and Solution
151
EEPROM Parameter Error Diagnosis and Solution
151
Communication Malfunction between Indoor and Outdoor Units
152
Fan Speed Malfunction Diagnosis and Solution
155
Open or Short Circuit of Temperature Sensor Diagnosis and Solution
161
Refrigerant Leakage Detection Diagnosis and Solution (EC)
162
Water-Level Alarm Malfunction Diagnosis and Solution
163
IPM Malfunction or IGBT Over-Strong Current Protection
164
Over-Voltage or Under-Voltage Protection Diagnosis and Solution
167
High Temperature Protection of Compressor Top Diagnosis and Solution
168
High Temperature Protection of IPM Board Diagnosis and Solution
169
Inverter Compressor Drive Error Diagnosis and Solution
170
Outdoor IPM Module Temperature Sensor Malfunction
171
J0 Malfunction
172
J1 Malfunction
173
J2 Malfunction
174
J3 Malfunction
175
J4 Malfunction
176
P6/J5 Malfunction
177
J6/P6 Malfunction
179
J8 Malfunction
181
Communication Malfunction between Indoor Unit and Auto-Lifting Panel
183
Auto-Lifting Panel Malfunction
184
Current Overload Protection
185
Communication Malfunction between Indoor Two Chips
187
Main Parts Check
188
Temperature Sensor Checking
188
Disassembly Instructions
189
Indoor Unit Disassembly
189
Console Unit Disassembly
201
Duct Unit Disassembly
207
Outdoor Unit Disassembly
211
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Midea MCA3U-12HRFN1-M(C) Specifications
General
Brand
Midea
Model
MCA3U-12HRFN1-M(C)
Category
Air Conditioner
Language
English
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