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M4OE-28HFN8-Q
KOREL M4OE-28HFN8-Q User Manual
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SERVICE MANUAL
TEHNIČKI PRIRUČNIK
KOREL
AIRCONDITIONER
EUROPE MARKET
SUPER DC INVERTER MULTI TYPE
M2OG-14HFN8-Q
= X
M2OC-18HFN8-Q
=
K20C-18FN8
= K20C-18HFN8
M2OD-18HFN8-Q
=x
M3OF-21HFN8-Q
= K30-21FN8
M3OF-27HFN8-Q
= K30-27FN8
= K30-37HFN8
M3OE-27HFN8-Q
=
x
M4OB-36HFN8-Q
=
K40-36
H
FN8
M5OD-42HFN8-Q
=
K50-42FN8
M4OE-28HFN8-Q
= X
DC MULTI OUTDO
OR UNITS
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 General Information of Outdoor Units
3
2 Features
4
3 Dimensions
5
4 Refrigeration Cycle Diagram
6
Refrigeration Circuit Drawing of Inverter 1 Drive 2 Type
6
Refrigeration Circuit Drawing of Inverter 1 Drive 4 Type
7
5 Wiring Diagram
8
M2Oc-18Hfn8-Q
8
M2Og-14Hfn8-Q
8
M2Od-18Hfn8-Q
9
M3Oe-27Hfn8-Q
11
M3Of-21Hfn8-Q, M3Of-27Hfn8-Q
12
M4Oe-28Hfn8-Q
12
M4Ob-36Hfn8-Q
13
M5Od-42Hfn8-Q
14
6 Indoor Units Combination
15
Indoor Unit Combination for M2OG-14HFN8-Q
15
Indoor Unit Combination for M3OE-21HFN1-Q
15
Indoor Unit Combination for M3OE-27HFN8-Q&M3OF-27HFN8-Q
15
Indoor Unit Combination for M4OB-36HFN8-Q
16
Indoor Unit Combination for M5OD-42HFN8-Q
16
7 Sound Levels
17
8 Installation Details
18
Wrench Torque Sheet for Installation
18
Connecting the Cables
18
Pipe Length and the Elevation
18
Installation for the First Time
19
Adding the Refrigerant if the Pipe Length >5M
21
Adding the Refrigerant after Running the System for Many Years
22
Re-Installation While the Indoor Unit Need to be Repaired
23
Collecting the Refrigerant into the Outdoor Unit
23
Air Purging with Vacuum Pump
24
Re-Installation While the Outdoor Unit Need to be Repaired
25
Evacuation for the Whole System
25
Refrigerant Charging
26
9 Electronic Control Function
27
Abbreviation
27
Electric Control Working Environment
27
Outdoor Unit’s Digital Display Tube
27
Outdoor Unit Point Check Function
28
Protection
29
Compressor Current Limit Protection
30
Cooling Mode
30
Heating Mode
30
Indoor / Outdoor Units Communication Protection
30
Outdoor Unit Anti-Freezing Protection
31
Oil Return
31
Low Outdoor Ambient Temperature Protection
31
10 Troubleshooting
32
Indoor Unit Error Code Explanation
32
Outdoor Unit Error Code Explanation
34
Indoor EEPROM Malfunction
35
Indoor / Outdoor Units Communication Error
36
Indoor Fan Speed Has Been out of Control
39
Indoor AC Fan Motor
39
Indoor DC Fan Motor
39
DC Motor Voltage Input and Output
40
Open or Short Circuit of Temperature Sensor
41
Water-Level Alarm Malfunction
41
E6(PFC Module Protection)
42
Communication Error between the Indoor PCB and Display Board
42
Inverter Compressor Drive Malfunction
43
Outdoor EEPROM Malfunction
43
Communication Malfunction between IPM Board and Outdoor Main Board
44
Voltage Protection(ODU E5)
45
Outdoor Fan Speed Has Been out of Control
46
Outdoor DC Fan Motor
46
High Pressure Protection
47
Low Pressure Protection
48
Current Protection of Compressor (ODU P3)
49
Temperature Protection of Compressor Discharge (ODU P4)
50
High Temperature Protection of Condenser (ODU P5)
51
IPM Module Protection (ODU P6)
52
Main Parts Check
54
Temperature Sensor Checking
54
Temperature Sensor Resistance Value
55
Compressor Checking
57
IPM Continuity Check
58
4-Way Valve
58
EXV Check
59
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KOREL M4OE-28HFN8-Q Specifications
General
Brand
KOREL
Model
M4OE-28HFN8-Q
Category
Air Conditioner
Language
English
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