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Heat Pump
Advantage Series
Midea Advantage Series
128 pages
Manual
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123
6)
Remove the screw
s of
front side panel
, and
remove the front si
de panel
(1 screw)
7)
Disconnect the fan moto
r
connectors FAN1(3p
,white)
and FAN2(3p,whi
te) from
DC
motor driv
er board.
8)
Remove the fan mo
tor after
unfastening fix
ing screw
s.
⑧
⑦
⑥
122
124
Table of Contents
Main Page
Default Chapter
1
Table of Contents
1
Contents
2
Table of Contents
4
Indoor Unit Combination
4
Dimension of Outdoor Unit
6
Refrigerant Cycle Diagram
8
Installation Details
11
Wrench Torque Sheet for Installation
11
Connecting the Cables
11
First-Time Installation
11
Pipe Length and the Elevation
11
Procedure When Servicing the Indoor Unit Refrigeration Circuit
13
Adding Refrigerant after Long-Term System Operation
13
Evacuation after Servicing the Outdoor Unit Refrigeration Circuit
14
Refrigerant Charging
14
Electronic Function
16
Electric Control Working Environment
16
Main Protection
16
Compressor Restart Delay
16
Abbreviation
16
High Condenser Coil Temp. Protection
17
Outdoor Unit Anti-Freezing Protection
17
Oil Return
17
Control and Functions
18
Low Outdoor Ambient Temperature Protection
18
Capacity Request Calculation
18
Defrosting Control
19
Outdoor Fan Control
20
Cooling Mode
20
Heating Mode
21
Electronic Expansion Valve (EXV) Control
21
Four-Way Valve Control
22
Wiring Diagrams
23
PCB Views
26
Troubleshooting
30
Safety
30
Indoor Unit Error Display
31
Outdoor Unit Display
34
Outdoor Unit Point Check Function
34
Outdoor Unit Digital Display
37
Outdoor Unit Error Display
38
Diagnosis and Solution
39
Indoor Unit Trouble Shooting
39
Indoor Unit EEPROM Parameter Error Diagnosis and Solution
39
Communication Malfunction between Indoor and Outdoor Units
40
Indoor Fan Speed Malfunction Diagnosis and Solution
46
Indoor AC Fan Motor
47
Temperature Sensor Malfunction Diagnosis and Solution
48
Inverter Module (IPM) Malfunction Diagnosis and Solution
49
Over-Voltage or Under-Voltage Protection Diagnosis and Solution
51
Compressor Drive Malfunction Diagnosis and Solution
52
Water-Level Alarm Malfunction Diagnosis and Solution
52
Indoor Units Mode Conflict
53
High Temperature Protection of IPM Board Diagnosis and Solution
54
Outdoor Unit Trouble Shooting
55
E0 (Outdoor Unit EEPROM Parameter Error) Diagnosis and Solution
55
E2 (Communication Malfunction between Indoor and Outdoor Units)
56
Malfunction between IPM Board and Outdoor Main Control Board
62
Outdoor Temperature Sensor Diagnosis and Solution
64
E5 (Over-Voltage or Under-Voltage Protection) Diagnosis and Solution
65
E6 (PFC Module Protection) Error Diagnosis and Solution
70
E8 (Outdoor Fan Speed Malfunction) Diagnosis and Solution
72
DC Fan Motor (Control Chip Is Inside Fan Motor)
73
P1 (High Pressure Protection) Diagnosis and Solution
75
P2 (Low Pressure Protection) Diagnosis and Solution
78
P3 (Current Overload Protection) Diagnosis and Solution
81
Temperature Protection of Compressor Discharge Diagnosis
84
P5 (High Temperature Protection of Condenser) Diagnosis and Solution
85
P6 (Inverter Module (IPM) Malfunction) Diagnosis and Solution
86
High Temperature Protection of Compressor Top (IDU P2/ODU P0)
88
Trouble Criterion of Main Parts
89
The Cooling Operation or Heating Operation Does Not Operate
89
When Cooling, Heat Exchanger of Non-Operating Indoor Unit Frosts
89
Temperature Sensor Resistance Value Table
90
Compressor Check
92
IPM Continuity Check
93
AC Fan Motor
93
4-Way Valve
94
EXV Check
95
Resistance to EXV Coil
96
Disassembly Instructions
100
M2OF-18HFN1-M (WCA30 Metal Plate)
100
M3OF-27HFN1-M (WD30 Metal Plate)
107
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