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Midea
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MSG-24CR
Service Manual
36 pgs1.18 Mb0
Service Manual
43 pgs1.88 Mb0

Midea MSG-24CR, MSG-24HR, MSG-30HR, MSG-30CR, MSG-36CR Service Manual

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MSG-24CR; MSG-24HR MSG-30CR; MSG-30HR MSG-36CR; MSG-36HR
Content
Content
1.1 Safety Precaution.........................................................................................................................1
1.2 Warning.........................................................................................................................................1
3.1 Indoor unit.....................................................................................................................................5
3.2 Outdoor unit..................................................................................................................................6
5. Refrigerant cycle diagram.........................................................................................12
6. Operation limits..........................................................................................................13
6.1 Cooling operation........................................................................................................................13
6.2 Heating operation.......................................................................................................................13
7. Schematic diagram and Wiring diagram..................................................................15
7.1 Schematic diagram.....................................................................................................................15
7.2 Wiring diagram............................................................................................................................16
8. Installation details......................................................................................................24
8.1 Wrench torque sheet for installation...........................................................................................24
8.2 Connecting the cables................................................................................................................24
8.3 Pipe length and the elevation.....................................................................................................24
8.4 Air purging of the piping and indoor unit....................................................................................25
8.5 Pumping down (Re-installation)..................................................................................................26
8.6 Re-air purging (Re-installation)...................................................................................................27
8.7 Balance refrigerant of the 2-way, 3-way valves..........................................................................28
8.8 Evacuation..................................................................................................................................29
8.9 Gas charging..............................................................................................................................30
9. Capacity table.............................................................................................................31
9.1 MSG-24CR.................................................................................................................................31
9.2 MSG-24HR.................................................................................................................................31
9.3 MSG-30CR.................................................................................................................................32
9.4 MSG-30HR.................................................................................................................................32
9.5 MSG-36CR.................................................................................................................................33
9.6 MSG-36HR.................................................................................................................................33
10. Electronic function.....................................................................................................34
10.1 Electronic control working environment......................................................................................34
10.2 Proper symbols and their meaning.............................................................................................34
10.3 Function......................................................................................................................................34
10.4 Protection....................................................................................................................................36
10.5 Fan only mode............................................................................................................................36
10.6 Cooling mode..............................................................................................................................36
10.7 Dehumidifying mode...................................................................................................................37
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Content
10.8 Heating mode.............................................................................................................................37
10.9 Defrosting mode(available for heating mode)............................................................................38
10.10 Auto mode..................................................................................................................................39
10.11 Force cooling function................................................................................................................39
10.12 Sleep mode.................................................................................................................................40
10.13 Auto restart function....................................................................................................................41
11. Model and Parameters...............................................................................................42
12. Troubleshooting.........................................................................................................43
12.1 Display board..............................................................................................................................43
12.2 Troubleshooting..........................................................................................................................44
12.3 Diagnostic chart..........................................................................................................................45
12.4 Resetting phenomenon often occurs during operation..............................................................46
12.5 Operation lamp flashes and Timer lamp off...............................................................................46
12.6 Operation lamp flashes and Timer lamp on...............................................................................46
12.7 Operation lamp off and Timer lamp flashes................................................................................47
12.8 Operation lamp on and Timer lamp flashes...............................................................................47
12.9 Operation lamp flashes, Timer lamp flashes .............................................................................47
13. Characteristic of temperature sensor......................................................................48
- 2 -
T
he function will be
Room temperature sensor.
Maintain the room temperature in accordance with the setting temperature.
Indoor fan is delayed for 5 sec at the starting.
Restarting is for approx.
3
minutes..
High
, med, low, breeze.
Light up in
the LED (LCD) for each operation mode.
The unit will decide the louver direction according to operation mode.
The fan is turn to low speed (cooling/heating).
The function is usually used in rainy days in
The louver can be set at the desired position or swing up and
The unit can be change by the room temperature.
P
revent the cold wind at
2. Function
Indoor unit
Operation ON/OFF by remote controller
Sensing by room temperature
Pipe temperature sensor.
Room temperature control
Starting temperature control
Service manual
Time Delay Safety control
Indoor fan speed control
Operation indication Lamps (LED)
Two-direction air vane
Sleep mode auto control
The unit will be turn off after seven hours.
Independent dehumidification
springtime or damp areas.
Self-diag. function
Anti-cold function
the beginning of unit start.
Temp. Compensation
Defrost mode
Auto-restart function
operate in any operation
Air flow Direction control
down automatically
Auto mode
- 3 -
Flexible wiring connection
Easy clean panel
T
he unit can operate in cooling mode at low
ambient
temperature conditions.
The unit has
3 mins delay between
continuously
ON/OFF
operations
.
Outdoor unit
B
ird tail propeller fan makes the outdoor unit run more quietly.
T
he hydrophilic fin can improve the heating efficiency at operation mode.
I
t is only operated in the heating operation mode except defrosting
operation
.
Made from
electrolytic zinc steel sheet and anti
-
rust coated components.
I
t protects the valves and prevents water from dripping.
Power relay control
Low ambient kit
Low noise air flow system
Hydrophilic aluminum fin
4 way valve control
Service manual
Discharge pipe temperature protect
Anti-rust cabinet
Valve protection cover
- 4 -
3. Dimension
3.1 Indoor unit
Service manual
Dimension Mode
24K 1080 330 222 30K 1080 330 222 36K 1250 325 230
W H L
- 5 -
560
360
735
560
360
735
560
360
735
3.2 Outdoor unit
Service manual
Dimension Mode
24K 845 695 335 30K 845 695 335 36K 895 860 302
W H D L1 L2 L3
- 6 -
Ph-V-Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
m3/h
≤56≤
Ф
Ф
m
4. Specification
Service manual
Model
Power supply
Capacity Btu/h
Cooling
Input W Rated current A EER Btu/w.h Capacity Btu/h
Heating
Input W Rated current A
COP W/W Max. current Starting current
Model
Type
Brand
Capacity Btu/h Compressor
Input W
Rated current(RLA) A
Locked rotor Amp(LRA) A
Thermal protector
Capacitor uF
Refrigerant oil ml
Model Indoor
fan motor
Brand
Input W
Capacitor uF
Speed(hi/mi/lo) r/min Indoor air flow (Hi/Mi/Lo) Indoor noise level (Hi/Mi/Lo)
Model Outdoor
fan motor
Brand
Input W
Capacitor uF
Speed r/min Outdoor air flow Outdoor noise level Refrigerant type R410A Design pressure
Refrigerant piping
Liquid side/ Gas side mm
Max. refrigerant pipe length m
Max. difference in level m Operation temp Ambient temp Application area
A A
m3/h
dB(A)
dB(A)
g
MPa
℃ ℃
2
MSG-24CR MSG-24HR
24000 24000
2750 2750
12.5 12.5
8.7, 2.6 8.7, 2.6
-----
----- 2750
-----
----- 2.9 16 16 50 50
QP407PT24C QP407PT24C
Rotary Rotary
LG LG
23400 23400
2317 2317
10.1 10.1 54 54
Internal Internal
45 45
650 650
YDK36-4G YDK36-4G
Welling Welling
65/63/60 65/63/60
2μF/450V 2μF/450V 1050/950/850 1050/950/850 1050/950/850 1050/950/850
43/40/37 43/40/37
YDK53-6K YDK53-6K
Welling Welling
130 130
3.5 3.5
800 800
2500 2500
R22/1850 R22/1900
2.6 2.6
9.53/Ф16.0 20 20 10 10
17-30 17-30 18-45 -7 - 45
40~56 40~56
27000
12.5
56
9.53/Ф16.0
Note:
- 7 -
The noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat different as a result of ambient condition. The above design and specifications are subject to change without prior notice for product improvement.
Service manual
Ph-V-Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
m3/h
≤58≤
Ф
Ф
m
Model
Power supply
Capacity Btu/h 28000 28000
Cooling
Input W 3200 3200 Rated current A 15 15 EER Btu/w.h 8.8 8.8 Capacity Btu/h
Heating
Input W ----- 3100 Rated current A
COP W/W ----- 9.7 Max. current Starting current
Model ZR34KH-PFJ-522 ZR34KH-PFJ-522
Type Scroll Scroll
Brand Copeland Copeland
Capacity Btu/h 28800 28800 Compressor
Input W 2520 2520
Rated current(RLA) A 12.1 12.1
Locked rotor Amp(LRA) A 76 76
Thermal protector Internal Internal
Capacitor uF 50 50
Refrigerant oil ml 1242 1242
Model Indoor
fan motor
Brand Welling Welling
Input W 68/65/62 68/65/62
Capacitor uF
Speed(hi/mi/lo) r/min 1150/1050/950 1150/1050/950 Indoor air flow (Hi/Mi/Lo) Indoor noise level (Hi/Mi/Lo)
Model YDK53-6K YDK53-6K Outdoor
fan motor
Brand Welling Welling
Input W 140 140
Capacitor uF 3.5 3.5
Speed r/min 800 800 Outdoor air flow Outdoor noise level Refrigerant type R410A Design pressure
Refrigerant piping
Liquid side/ Gas side mm
Max. refrigerant pipe length m 20 20
Max. difference in level m 10 10 Operation temp Ambient temp Application area
MSG-30CR MSG-30HR
-----
-----
30000
14.5
A 20 20 A 76 76
YDK36-4G YDK36-4G
3μF/450V 3μF/450V
m3/h 1150/1050/950 1150/1050/950
dB(A) 47/44/41 47/44/41
2500 2500
dB(A)
58
g R22/2250 R22/2450
MPa 2.6 2.6
℃ ℃
9.53/Ф16.0
17-30 17-30
2
18-45 -7 - 45
50~68 50~68
9.53/Ф16.0
Note:
- 8 -
The noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat different as a result of ambient condition. The above design and specifications are subject to change without prior notice for product improvement.
Service manual
Ph-V-Hz
≥
m3/h
Φ
Φ
m
Model
Power supply
Capacity Btu/h Cooling
Input W
Rated current A
EER Btu/w.h
Capacity Btu/h Heating
Input W -----
Rated current A
COP W/W ----- 9.3 Max. current Starting current
Model
Type
Brand
Capacity Btu/h Compressor
Input W
Rated current(RLA) A
Locked rotor Amp(LRA) A
Thermal protector 15HM1637 15HM1637
Capacitor uF 60uF/
Refrigerant oil ml 1240 1240
Model Indoor
fan motor
Brand Welling Welling
Input W
Capacitor uF 3 3
Speed(hi/mi/lo) r/min 1260/1150/990 1260/1150/990 Indoor air flow (Hi/Mi/Lo) Indoor noise level (Hi/Mi/Lo)
Model YDK100-6 YDK100-6 Outdoor
fan motor
Brand Welling Welling
Input W 169 169
Capacitor uF 5 5
Speed r/min 900 900 Outdoor air flow Outdoor noise level Refrigerant type R410A Design pressure
Refrigerant piping
Liquid side/ Gas side mm
Max. refrigerant pipe length m 25 25
Max. difference in level m 10 10 Operation temp Ambient temp Application area
MSG-36CR MSG-36HR
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz
35000 35000
4120 4120
18.6 18.6
8.5 8.5
-----
-----
38000
4100
18.5
A 32 32 A 150 150
ZR47K3-PFJ-522 ZR47K3-PFJ-522
SCROLL SCROLL
COPELAND COPELAND
39000 39000
3510 3510
19.3 19.3 114 114
400VAC 60uF/≥400VAC
YDK50-4E YDK50-4E
85/80/77 85/80/77
m3/h 1350/1200/1050 1350/1200/1050
dB(A)
49/46/42 49/46/42
3000 3000
dB(A) 59 59
g 2400 2450
MPa 2.6 2.6
℃ ℃
9.52/Φ16
17-30 17-30
2
18-45 -7 - 45
60~78 60~78
9.52/Φ16
Note:
The noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat different as a result of ambient condition. The above design and specifications are subject to change without prior notice for product improvement.
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