Midea MSG-24CR User manual

MSG-24CR;MSG-24HR
MSG-30CR;MSG-30HR
MSG-36CR;MSG-36HR

Content
-1-
Content
1. Precaution....................................................................................................................1
1.1 SafetyPrecaution.........................................................................................................................1
1.2 Warning.........................................................................................................................................1
2. Function........................................................................................................................3
3. Dimension.....................................................................................................................5
3.1 Indoorunit.....................................................................................................................................5
3.2 Outdoorunit..................................................................................................................................6
4. Specification.................................................................................................................7
5. Refrigerantcyclediagram.........................................................................................12
6. Operationlimits..........................................................................................................13
6.1 Coolingoperation........................................................................................................................13
6.2 Heatingoperation.......................................................................................................................13
7. SchematicdiagramandWiringdiagram..................................................................15
7.1 Schematicdiagram.....................................................................................................................15
7.2 Wiringdiagram............................................................................................................................16
8. Installationdetails......................................................................................................24
8.1 Wrenchtorque sheet forinstallation...........................................................................................24
8.2 Connectingthe cables................................................................................................................24
8.3 Pipelengthand the elevation.....................................................................................................24
8.4 Airpurgingofthe pipingand indoorunit....................................................................................25
8.5 Pumpingdown(Re-installation)..................................................................................................26
8.6 Re-airpurging(Re-installation)...................................................................................................27
8.7 Balancerefrigerant ofthe 2-way, 3-wayvalves..........................................................................28
8.8 Evacuation..................................................................................................................................29
8.9 Gascharging..............................................................................................................................30
9. Capacitytable.............................................................................................................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. Electronicfunction.....................................................................................................34
10.1 Electroniccontrolworkingenvironment......................................................................................34
10.2 Propersymbolsand theirmeaning.............................................................................................34
10.3 Function......................................................................................................................................34
10.4 Protection....................................................................................................................................36
10.5 Fan onlymode............................................................................................................................36
10.6 Coolingmode..............................................................................................................................36
10.7 Dehumidifyingmode...................................................................................................................37

Content
-2-
10.8 Heatingmode.............................................................................................................................37
10.9 Defrostingmode(availableforheatingmode)............................................................................38
10.10 Automode..................................................................................................................................39
10.11 Forcecoolingfunction................................................................................................................39
10.12 Sleepmode.................................................................................................................................40
10.13 Autorestart function....................................................................................................................41
11. Model andParameters...............................................................................................42
12. Troubleshooting.........................................................................................................43
12.1 Displayboard..............................................................................................................................43
12.2 Troubleshooting..........................................................................................................................44
12.3 Diagnosticchart..........................................................................................................................45
12.4 Resettingphenomenon often occursduringoperation..............................................................46
12.5 Operation lampflashesand Timerlampoff...............................................................................46
12.6 Operation lampflashesand Timerlampon...............................................................................46
12.7 Operation lampoffand Timerlampflashes................................................................................47
12.8 Operation lampon and Timerlampflashes...............................................................................47
12.9 Operation lampflashes,Timerlampflashes.............................................................................47
13. Characteristicoftemperaturesensor......................................................................48

Servicemanual
-3-
2.Function
T
he functionwill be
operatein anyoperation
mode.
Indoorunit
Operation ON/OFF byremotecontroller
Roomtemperaturesensor.
Pipetemperaturesensor.
Sensing byroomtemperature
Maintaintheroomtemperatureinaccordancewiththesettingtemperature.
Roomtemperaturecontrol
Indoorfanisdelayedfor5secat thestarting.
Starting temperaturecontrol
Restartingisforapprox.
3
minutes..
TimeDelay Safetycontrol
High
,med,low,breeze.
Indoorfanspeedcontrol
Lightupin
theLED(LCD)foreachoperationmode.
T
he unit will decidethelouverdirectionaccording tooperationmode.
Two-directionairvane
The fan isturntolowspeed(cooling/heating).
The unit will beturnoff aftersevenhours.
Sleepmodeautocontrol
The functionisusuallyusedinrainydaysin
springtimeordampareas.
Independentdehumidification
Operation indication Lamps(LED)
The louvercanbesetat thedesired position orswing upand
downautomatically
AirflowDirection control
The unitcanbechangebytheroomtemperature.
Automode
Easy cleanpanel
Flexiblewiring connection
Defrostmode
Temp. Compensation
P
revent thecoldwindat
thebeginning of unit start.
Anti-coldfunction
Auto-restartfunction
Self-diag. function

Servicemanual
-4-
T
he unitcanoperateincoolingmodeatlow
ambient
temperatureconditions.
The unithas
3minsdelaybetween
continuously
ON/OFF
operations
.
Outdoorunit
Powerrelay control
Lowambientkit
B
irdtailpropellerfanmakestheoutdoorunit runmorequietly.
Lownoise airflowsystem
T
he hydrophilicfincanimprovetheheatingefficiencyatoperationmode.
Hydrophilicaluminumfin
I
t isonlyoperated intheheatingoperation modeexceptdefrosting
operation
.
Dischargepipetemperatureprotect
Anti-rustcabinet
Valveprotection cover
4way valvecontrol
Madefrom
electrolyticzincsteel sheetandanti
-
rust coated components.
I
t protectsthevalvesandpreventswaterfromdripping.

Servicemanual
-5-
3.Dimension
3.1Indoorunit
Dimension
Mode W H L
24K 1080 330 222
30K 1080 330 222
36K 1250 325 230

Servicemanual
-6-
3.2Outdoorunit
Dimension
Mode W H D L1 L2 L3
24K 845 695 335
560
360
735
30K 845 695 335
560
360
735
36K 895 860 302
560
360
735

Servicemanual
-7-
4.Specification
MSG-24CR MSG-24HR
Ph-V-Hz
1,220-240V~,50Hz
1, 220-240V~,50Hz
CapacityBtu/h 24000 24000
Input W 2750 2750
Rated currentA 12.5 12.5
EER Btu/w.h 8.7, 2.6 8.7,2.6
CapacityBtu/h
----- 27000
Input W ----- 2750
Rated currentA
----- 12.5
COP W/W ----- 2.9
A 16 16
A 50 50
Model QP407PT24C QP407PT24C
Type Rotary Rotary
Brand LG LG
CapacityBtu/h 23400 23400
Input W 2317 2317
Rated current(RLA) A 10.1 10.1
Lockedrotor Amp(LRA) A 54 54
Thermal protector Internal Internal
Capacitor uF 45 45
Refrigerant oil ml 650 650
Model
YDK36-4G YDK36-4G
Brand Welling Welling
Input W 65/63/60 65/63/60
Capacitor uF
2 F/450V 2 F/450V
Speed(hi/mi/lo) r/min 1050/950/850 1050/950/850
m3/h 1050/950/850 1050/950/850
dB(A) 43/40/37 43/40/37
Model YDK53-6K YDK53-6K
Brand Welling Welling
Input W 130 130
Capacitor uF 3.5 3.5
Speed r/min 800 800
m
3
/h
2500 2500
dB(A)
≤
56
≤
56
g R22/1850 R22/1900
MPa 2.6 2.6
Liquidside/ Gas sidemm
Ф
9.53/
Ф
16.0
Ф
9.53/
Ф
16.0
Max. refrigerant pipe lengthm 20 20
Max. difference inlevel m 10 10
℃
17-30 17-30
℃
18-45 -7-45
m
2
40~56 40~56
Model
Powersupply
Cooling
Heating
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Indoorair flow(Hi/Mi/Lo)
Indoornoiselevel(Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor air flow
Operationtemp
Ambient temp
Applicationarea
Outdoor noiselevel
Refrigerant typeR410A
Designpressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-8-
MSG-30CR MSG-30HR
Ph-V-Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
CapacityBtu/h 28000 28000
Input W 3200 3200
Ratedcurrent A 15 15
EERBtu/w.h 8.8 8.8
CapacityBtu/h ----- 30000
Input W ----- 3100
Ratedcurrent A ----- 14.5
COPW/W ----- 9.7
A20 20
A76 76
Model ZR34KH-PFJ-522 ZR34KH-PFJ-522
Type Scroll Scroll
Brand Copeland Copeland
CapacityBtu/h 28800 28800
Input W 2520 2520
Ratedcurrent(RLA) A 12.1 12.1
Lockedrotor Amp(LRA)A 76 76
Thermal protectorInternal Internal
CapacitoruF 50 50
Refrigerantoil ml 1242 1242
Model YDK36-4G YDK36-4G
Brand Welling Welling
Input W 68/65/62 68/65/62
CapacitoruF 3
F/450V 3 F/450V
Speed(hi/mi/lo) r/min 1150/1050/950 1150/1050/950
m3/h 1150/1050/950 1150/1050/950
dB(A) 47/44/41 47/44/41
Model YDK53-6K YDK53-6K
Brand Welling Welling
Input W 140 140
CapacitoruF 3.5 3.5
Speed r/min 800 800
m
3
/h
2500 2500
dB(A)
≤
58
≤
58
gR22/2250 R22/2450
MPa 2.6 2.6
Liquidside/Gas sidemm
Ф
9.53/
Ф
16.0
Ф
9.53/
Ф
16.0
Max.refrigerantpipelengthm 20 20
Max.differenceinlevel m 10 10
℃17-30 17-30
℃18-45 -7-45
m
250~68 50~68
Operationtemp
Ambienttemp
Applicationarea
Outdoor noiselevel
RefrigeranttypeR410A
Design pressure
Refrigerant
piping
Indoorair flow(Hi/Mi/Lo)
Indoornoise level (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor airflow
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Model
Powersupply
Cooling
Heating
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-9-
MSG-36CR MSG-36HR
Ph-V-Hz
1, 220-240V~,50Hz 1,220-240V~,50Hz
CapacityBtu/h 35000 35000
Input W 4120 4120
Ratedcurrent A 18.6 18.6
EERBtu/w.h 8.5 8.5
CapacityBtu/h ----- 38000
Input W ----- 4100
Ratedcurrent A ----- 18.5
COPW/W ----- 9.3
A32 32
A150 150
Model ZR47K3-PFJ-522 ZR47K3-PFJ-522
Type SCROLL SCROLL
Brand COPELAND COPELAND
CapacityBtu/h 39000 39000
Input W 3510 3510
Ratedcurrent(RLA) A 19.3 19.3
Lockedrotor Amp(LRA)A 114 114
Thermal protector15HM1637 15HM1637
CapacitoruF 60uF/
≥
400VAC 60uF/
≥
400VAC
Refrigerantoil ml 1240 1240
Model YDK50-4E YDK50-4E
Brand Welling Welling
Input W 85/80/77 85/80/77
CapacitoruF 3 3
Speed(hi/mi/lo) r/min 1260/1150/990 1260/1150/990
m3/h 1350/1200/1050 1350/1200/1050
dB(A) 49/46/42 49/46/42
Model YDK100-6 YDK100-6
Brand Welling Welling
Input W 169 169
CapacitoruF 5 5
Speed r/min 900 900
m
3
/h
3000 3000
dB(A) 59 59
g2400 2450
MPa 2.6 2.6
Liquidside/Gas sidemm
Φ
9.52/
Φ
16
Φ
9.52/
Φ
16
Max.refrigerantpipelengthm 25 25
Max.differenceinlevel m 10 10
℃17-30 17-30
℃18-45 -7-45
m
260~78 60~78
Model
Powersupply
Cooling
Heating
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Indoorair flow(Hi/Mi/Lo)
Indoornoise level (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor airflow
Operationtemp
Ambienttemp
Applicationarea
Outdoor noiselevel
RefrigeranttypeR410A
Design pressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-10-
MSG-30CR MSG-30HR
Ph-V-Hz
3Ph,380-420V,50Hz
3Ph,380-420V,50Hz
CapacityBtu/h 28000 28000
Input W 3000 3000
Ratedcurrent A 5.3 5.3
EERBtu/w.h 9.3 9.3
CapacityBtu/h ----- 32000
Input W ----- 3000
Ratedcurrent A ----- 5.3
COPW/W ----- 10.7
A7 7
A40 40
Model ZR34KH-TFD-522 ZR34KH-TFD-522
Type Scroll Scroll
Brand Copeland Copeland
CapacityBtu/h 28000 28000
Input W 2480 2480
Ratedcurrent(RLA) A 4.6 4.6
Lockedrotor Amp(LRA)A 40 40
Thermal protectorInternal Internal
CapacitoruF ----- -----
Refrigerantoil ml 1242 1242
Model YDK36-4G YDK36-4G
Brand Welling Welling
Input W 72/67/63 72/67/63
CapacitoruF 3
F/450V 3 F/450V
Speed(hi/mi/lo) r/min 1150/1060/960 1150/1060/960
m3/h 1150/1050/950 1150/1050/950
dB(A) 47/44/41 47/44/41
Model YDK53-6K YDK53-6K
Brand Welling Welling
Input W 140 140
CapacitoruF 3.5 3.5
Speed r/min 800 800
m
3
/h
2500 2500
dB(A)
≤
58
≤
58
gR22/2250 R22/2450
MPa 2.6 2.6
Liquidside/Gas sidemm
Ф
9.53/
Ф
16.0
Ф
9.53/
Ф
16.0
Max.refrigerantpipelengthm 20 20
Max.differenceinlevel m 10 10
℃17-30 17-30
℃18-45 -7-45
m
250~68 50~68
Model
Powersupply
Cooling
Heating
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Indoorair flow(Hi/Mi/Lo)
Indoornoise level (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor airflow
Operationtemp
Ambienttemp
Applicationarea
Outdoor noiselevel
RefrigeranttypeR410A
Design pressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-11-
MSG-36CR MSG-36HR
Ph-V-Hz 3,380-420V~, 50Hz3, 380-420V~,50Hz
CapacityBtu/h
35000 35000
Input W
4120 4120
RatedcurrentA
6.5 6.5
EERBtu/w.h
8.5 8.5
CapacityBtu/h ----- 38000
Input W ----- 4100
RatedcurrentA ----- 6.4
COPW/W
----- 9.3
A
11 11
A
48 48
Model
ZR34KH-TFD-522 ZR34KH-TFD-522
Type
Scroll Scroll
Brand
Copeland Copeland
CapacityBtu/h
39000 39000
Input W
3480 3480
Ratedcurrent(RLA) A
6.3 6.3
LockedrotorAmp(LRA)A
43/48 43/48
Thermal protector
34HM224 34HM224
CapacitoruF
----- -----
Refrigerantoil ml SONTEX200LT1242SONTEX200LT1242
Model
YDK50-4E YDK50-4E
Brand
Welling Welling
Input W
85/80/77 85/80/77
CapacitoruF
3 3
Speed(hi/mi/lo) r/min
1260/1150/990 1260/1150/990
m3/h
1350/1200/1050 1350/1200/1050
dB(A)
49/46/42 49/46/42
Model
YDK100-6 YDK100-6
Brand
Welling Welling
Input W
169 169
CapacitoruF
5 5
Speedr/min
900 900
m
3
/h
3000 3000
dB(A)
59 59
g
2400 2450
MPa
2.6 2.6
Liquidside/ Gassidemm
Φ
9.52/
Φ
16
Φ
9.52/
Φ
16
Max. refrigerantpipelengthm
25 25
Max. difference inlevel m
10 10
℃
17-30 17-30
℃
18-45 -7-45
m
2
60~78 60~78
Model
Powersupply
Cooling
Heating
Max.current
Startingcurrent
Compressor
Indoor
fanmotor
Indoorairflow(Hi/Mi/Lo)
Indoornoiselevel (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoorairflow
Operationtemp
Ambient temp
Application area
Outdoornoiselevel
Refrigerant typeR410A
Design pressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-12-
5.Refrigerantcyclediagram
ØCooling only
ØHeatpumpmode

Servicemanual
-15-
7.Schematicdiagram andWiringdiagram
7.1 Schematicdiagram

Servicemanual
-18-
7.2.2Heatingmode
MSG-24HR, MSG-30HR
A1 A2

Servicemanual
-19-
MSG-36HR
A1A2

Servicemanual
-20-
7.2.3Coolingmode (3Ph)
MSG-30CR (3ph)

Servicemanual
-22-
7.2.4Heatingmode (3Ph)
MSG-30HR (3ph)
173 456 2

Servicemanual
-23-
MSG-36HR (3ph)