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MEHSU-12PHH2
Midea MEHSU-12PHH2 User Manual
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3. Dimension
3.1 Indoor Unit
Model
W
D
H
9k(115V&23
0V)
31.89(810)
7.87(20
0)
11.81(300)
12k(115V&2
30V)
31.89(810)
7.87(20
0)
11.81(300)
18k
42.91(1090)
9.25(23
5)
13.31(338)
24k
42.91(1090)
9.25(23
5)
13.31(338)
30k
54.15(1350)
10.71(272)
14.37(365)
36k
54.15(1350)
10.71(272)
14.37(365)
6
8
Table of Contents
Default Chapter
2
Table of Contents
2
Safety Precaution
3
Warning
3
2 Model List
6
Model Names of Indoor/Outdoor Units
6
3 Dimension
7
Indoor Unit
7
Outdoor Unit
9
4 Refrigerant Cycle Diagram
10
5 Wiring Diagram
11
Indoor Unit
11
Mehs-09Psh1, Mehs-12Psh1
11
Mehsu-09Phh2, Mehsu-12Phh2
11
Outdoor Unit
13
Installation Details
15
Wrench Torque Sheet for Installation
15
Connecting the Cables
15
Pipe Length and the Elevation
15
Installation for the First Time
16
Adding the Refrigerant after Running the System for Many Years
16
Re-Installation While the Indoor Unit Need to be Repaired
17
Re-Installation While the Outdoor Unit Need to be Repaired
18
7 Operation Characteristics
19
8 Electronic Function
20
Abbreviation
20
Display Function
20
Main Protection
21
Operation Modes and Functions
22
Fan Mode
22
Cooling Mode
22
Compressor Running Rules
22
Evaporator Temperature Protection
23
Heating Mode
23
Outdoor Fan Running Rules
23
Indoor Fan Running Rules
23
Evaporator Coil Temperature Protection
24
Auto-Mode
24
Forced Operation Function
24
Drying Mode
24
Point Check Function
26
9 Troubleshooting
28
Safety
28
Indoor Unit Error Display
29
Outdoor Unit Error Display
30
Diagnosis and Solution
34
EEPROM Parameter Error Diagnosis and Solution
34
Indoor / Outdoor Unit’s Communication Diagnosis and Solution
35
Zero Crossing Detection Error Diagnosis and Solution (E2)
37
Fan Speed Has Been out of Control Diagnosis and Solution(E3)
38
DC Motor Voltage Input and Output(Voltage :115V~)
39
DC Motor Voltage Input and Output(Voltage: 220-240V~)
39
Indoor AC Fan Motor
39
Outdoor DC Fan Motor
39
Refrigerant Leakage Detection Diagnosis and Solution
41
Overload Current Protection Diagnosis and Solution(F0)
42
For 24K~36K
47
Over Voltage or too Low Voltage Protection Diagnosis and Solution
48
IPM Continuity Check
51
Error Code
53
Low Pressure Protection Diagnosis and Solution(P6)
53
Trouble Shooting
53
Main Parts Check
54
Temperature Sensor Checking
54
Temperature Sensor Resistance Value Table for T1,T2,T3,T4
55
Temperature Sensor Resistance Value Table for TP
56
Normal Voltage of P and N
58
Compressor Checking
59
Cooling Chart
61
Pressure on Service Port
61
Heating Chart
62
Disassembly Instructions
63
Indoor Unit
63
How to Remove the Electrical Parts
64
How to Remove the Evaporator
65
How to Remove the Fan Motor
66
Outdoor Unit
67
How to Remove the Fan Ass’y
68
How to Remove the Four-Way Valve
72
How to Remove the Compressor
72
How to Remove the Panel Plate
73
4
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Midea MEHSU-12PHH2 Specifications
General
Brand
Midea
Model
MEHSU-12PHH2
Category
Air Conditioner
Language
English
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