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MSG-21HRN2
Midea MSG-21HRN2 User Manual
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Service manual
- 45 -
12.7
Operation lamp off and Timer lamp flashes
12.8
Operation lamp on and Timer lamp flashes
EEROM error
, indoor PC
B is defective.
12.9
Operation lamp flashes, Timer lamp flashes .
This is alarm signal when the main chip can’t det
ect over-zero signal. When such failure occurs, the
main control board must have fault.
48
50
Table of Contents
Default Chapter
3
Table of Contents
3
1 Precaution
5
Safety Precaution
5
Warning
5
2 Function
7
3 Dimension
9
Indoor Unit
9
Outdoor Unit
10
4 Specification
11
5 Refrigerant Cycle Diagram
15
6 Operation Limits
16
Cooling Operation
16
Heating Operation
16
7 Schematic Diagram and Wiring Diagram
17
Schematic Diagram
17
Wiring Diagram
18
8 Installation Details
23
Wrench Torque Sheet for Installation
23
Connecting the Cables
23
Pipe Length and the Elevation
23
Air Purging of the Piping and Indoor Unit
24
Pumping down (Re-Installation)
25
Re-Air Purging (Re-Installation)
26
Balance Refrigerant of the 2-Way, 3-Way Valves
27
Evacuation
28
Gas Charging
29
9 Capacity Table
30
Msg-07Crn2
30
Msg-07Hrn2
30
Msg-09Crn2
31
Msg-09Hrn2
31
Msg-12Crn2
32
Msg-12Hrn2
32
Msg-16Crn2
33
Msg-16Hrn2
33
Msg-18Crn2
34
Msg-18Hrn2
34
Msg-21Crn2
35
Msg-21Hrn2
35
10 Electronic Function
36
Electronic Control Working Environment
36
Proper Symbols and Their Meaning
36
Function
36
Protection
37
Fan-Only Mode
37
Cooling Mode
37
Dehumidifying Mode
38
Heating Mode
39
Defrosting Mode(Available for Heating Mode)
40
Auto Mode
41
Force Cooling Function
42
Sleep Mode
42
Auto Restart Function
43
Anion (Optional)
43
11 Model and Parameters
44
12 Troubleshooting
45
Display Board
45
Troubleshooting
46
Diagnostic Chart
47
Resetting Phenomenon Often Occurs During Operation
48
Operation Lamp Flashes and Timer Lamp off
48
Operation Lamp Flashes and Timer Lamp on
48
Operation Lamp off and Timer Lamp Flashes
49
Operation Lamp on and Timer Lamp Flashes
49
Operation Lamp Flashes, Timer Lamp Flashes
49
13 Characteristic of Temperature Sensor
50
4
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Midea MSG-21HRN2 Specifications
General
Brand
Midea
Model
MSG-21HRN2
Category
Air Conditioner
Language
English
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