Midea MSG-05CR User manual

MSG-05CR
MSG-07CR;MSG-07HR
MSG-09CR;MSG-09HR
MSG-12CR;MSG-12HR
MSG-16CR;MSG-16HR
MSG-18CR;MSG-18HR
MSG-21CR;MSG-21HR

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......................................................................................................21
8.1 Wrenchtorque sheet forinstallation...........................................................................................21
8.2 Connectingthe cables................................................................................................................21
8.3 Pipelengthand the elevation.....................................................................................................21
8.4 Airpurgingofthe pipingand indoorunit....................................................................................22
8.5 Pumpingdown(Re-installation)..................................................................................................23
8.6 Re-airpurging(Re-installation)...................................................................................................24
8.7 Balancerefrigerant ofthe 2-way, 3-wayvalves..........................................................................25
8.8 Evacuation..................................................................................................................................26
8.9 Gascharging..............................................................................................................................27
9. Capacitytable.............................................................................................................28
9.1 MSG-05CR.................................................................................................................................28
9.2 MSG-07CR.................................................................................................................................28
9.3 MSG-07HR.................................................................................................................................28
9.4 MSG-09CR.................................................................................................................................29
9.5 MSG-09HR.................................................................................................................................29
9.6 MSG-12CR.................................................................................................................................30
9.7 MSG-12HR.................................................................................................................................30
9.8 MSG-16CR.................................................................................................................................31
9.9 MSG-16HR.................................................................................................................................31
9.10 MSG-18CR.................................................................................................................................32
9.11 MSG-18HR.................................................................................................................................32
9.12 MSG-21CR.................................................................................................................................33
9.13 MSG-21HR.................................................................................................................................33

Content
-2-
10. Electronicfunction.....................................................................................................34
10.1 Electroniccontrolworkingenvironment......................................................................................34
10.2 Propersymbolsand theirmeaning.............................................................................................34
10.3 Function......................................................................................................................................34
10.4 Protection....................................................................................................................................35
10.5 Fan-onlymode............................................................................................................................35
10.6 Coolingmode..............................................................................................................................35
10.7 Dehumidifyingmode...................................................................................................................36
10.8 Heatingmode.............................................................................................................................37
10.9 Defrostingmode(availableforheatingmode)............................................................................38
10.10 Automode..................................................................................................................................39
10.11 Forcecoolingfunction................................................................................................................40
10.12 Sleepmode.................................................................................................................................40
10.13 Autorestart function....................................................................................................................41
10.14 Anion (optional)...........................................................................................................................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
-1-
1.Precaution
1.1 SafetyPrecaution
nTopreventinjurytotheuserorotherpeopleandpropertydamage,thefollowinginstructionsmustbefollowed.
nIncorrectoperationduetoignoringinstructionwillcauseharmordamage.
nBeforeserviceunit,besuretoreadthisservicemanualatfirst.
1.2 Warning
ØInstallation
nDonotuseadefectiveorunderratedcircuitbreaker.
Use thisappliance onadedicatedcircuit.
Thereisrisk offireorelectricshock.
nForelectrical work,contactthedealer, seller,a
qualifiedelectrician,oranAuthorizedservicecenter.
Donotdisassembleorrepairtheproduct,thereisriskof
fireorelectricshock.
nAlwaysgroundtheproduct.
Thereisrisk offireorelectricshock.
nInstallthepanel and thecoverofcontrolbox
securely.
Thereisrisk offireofelectricshock.
nAlwaysinstall adedicatedcircuitandbreaker.
Improperwiringorinstallation maycauseforeorelectric
shock.
nUse thecorrectlyratedbreakeroffuse.
Thereisrisk offireorelectricshock.
nDonotmodifyorextend thepowercable.
Thereisrisk offireorelectricshock.
nDonotinstall,remove,orreinstalltheunitby
yourself(customer).
Thereisrisk offire,electricshock,explosion,orinjury.
nBecautionwhenunpackingandinstallingthe
product.
Sharpedgescouldcauseinjury,beespeciallycarefulof
thecaseedgesand thefinsonthecondenserand
evaporator.
nForinstallation,alwayscontactthedealeroran
Authorizedservicecenter.
Thereisrisk offire,electricshock,explosion,orinjury.
nDonotinstalltheproducton adefectiveinstallation
stand.
It maycauseinjury,accident,ordamagetotheproduct.
nBesuretheinstallationareadoesnotdeteriorate
withage.
If thebasecollapses,theairconditionercouldfallwithit,
causing propertydamage, productfailure,andpersonal
injury.
nDonotlettheairconditionerrun foralong time
whenthehumidityisveryhighandadoorora
windowsisleft open.
Moisturemaycondenseandwet ordamagefurniture.
nTake caretoensurethatpowercablecouldnotbe
pulledoutordamagedduringoperation.
Thereisrisk offireorelectricshock.
nDonotplaceanythingonthepowercable.
Thereisrisk offireorelectricshock.
nDonotplug orunplugthepowersupplyplugduring
operation.
Thereisrisk offireorelectricshock.
nDonottouch(operation)theproductwithwethands.
Thereisrisk offireorelectricshock.
nDonotplaceaheaterorotherappliancenearthe
powercable.
Thereisrisk offireand electricshock.
nDonotallowwatertorunintoelectricparts.
Itmaycausefire,failureoftheproduct, orelectricshock.
nDonotstoreoruseflammablegasorcombustible
neartheproduct.
Thereisrisk offireorfailureof product.
nDonotuse theproductinatightlyclosedspacefora
long time.
Oxygendeficiency couldoccur.
nWhenflammablegasleaks,turnoffthegasand
openawindowforventilationbeforeturnthe
producton.
Donot usethetelephoneorturnswitcheson oroff.
Thereisrisk ofexplosionorfire.
nIfstrangesounds,orsmallorsmoke comesfrom
product.Turnthebreakeroffordisconnectthe
powersupplycable.
Thereisrisk ofelectricshockorfire.
nStop operationandclose thewindowinstormor
hurricane.Ifpossible,remove theproductfromthe
windowbeforethehurricanearrives.
Thereisrisk ofpropertydamage,failureof product, or
electricshock.
nDonotopentheinletgrill oftheproductduring
operation.(Donottouchtheelectrostaticfilter,ifthe

Servicemanual
-2-
unitissoequipped.)
Thereisrisk ofphysicalinjury, electricshock, orproduct
failure.
nWhentheproductissoaked(floodedorsubmerged),
contactanAuthorizedservicecenter.
Thereisrisk offireorelectricshock.
nBecautionthatwatercouldnotentertheproduct.
Thereisrisk offire,electricshock,orproductdamage.
nVentilatetheproductfromtimetotimewhen
operatingittogetherwithastove,etc.
Thereisrisk offireorelectricshock.
nTurnthemainpoweroffwhencleaningor
maintaining theproduct.
Thereisrisk ofelectricshock.
nWhentheproductisnotbeusedforalong time,
disconnectthepowersupplyplug orturnoffthe
breaker.
Thereisriskofproductdamageorfailure,orunintended
operation.
nTake caretoensurethatnobodycouldsteponorfall
ontotheoutdoorunit.
Thiscouldresultinpersonalinjuryandproductdamage.
ØCAUTION
nAlwayscheckforgas(refrigerant)leakageafter
installationorrepairofproduct.
Lowrefrigerantlevelsmaycausefailureof product.
nInstallthedrainhosetoensurethatwaterisdrained
awayproperly.
Abadconnectionmaycausewaterleakage.
nKeeplevel evenwheninstallingtheproduct.
Toavoidvibrationof waterleakage.
nDonotinstalltheproductwherethenoiseorhotair
fromtheoutdoorunitcoulddamagethe
neighborhoods.
It maycauseaproblemforyourneighbors.
nUse twoormorepeopletoliftandtransportthe
product.
Avoidpersonalinjury.
nDonotinstalltheproductwhereitwill beexposedto
sea wind (saltspray)directly.
It maycausecorrosion on theproduct.Corrosion,
particularlyonthecondenserandevaporatorfins,could
causeproduct malfunctionorinefficient operation.
ØOperational
nDonotexpose theskindirectlytocoolairforlong
periodsoftime.(Donotsitinthedraft).
Thiscouldharmtoyourhealth.
nDonotusetheproductforspecial purposes,such
as preservingfoods,worksofart,etc.Itisa
consumerairconditioner, notaprecisionrefrigerant
system.
Thereisrisk ofdamageorlossof property.
nDonotblocktheinletoroutletofairflow.
It maycauseproductfailure.
nUse asoftclothtoclean.Donotuseharsh
detergents,solvents,etc.
Thereisrisk offire,electricshock,ordamagetothe
plasticpartsoftheproduct.
nDonottouchthemetalpartsoftheproductwhen
removingtheairfilter.Theyareverysharp.
Thereisrisk ofpersonalinjury.
nDonotsteponprputanythingontheproduct.
(outdoorunits)
Thereisrisk ofpersonalinjuryand failureof product.
nAlwaysinsertthefiltersecurely. Cleanthefilter
everytwoweeksormoreoftenifnecessary.
Adirtyfilterreducestheefficiencyof theairconditioner
and couldcauseproduct malfunctionordamage.
nDonotinserthandsorotherobjectthroughairinlet
oroutletwhiletheproductisoperated.
Therearesharpandmovingpartsthatcouldcause
personalinjury.
nDonotdrinkthewaterdrainedfromtheproduct.
Itisnotsanitarycouldcauseserioushealthissues.
nUse afirmstool orladderwhencleaningor
maintaining theproduct.
Becarefulandavoidpersonalinjury.
nReplacetheallbatteries intheremotecontrolwith
newonesofthesametype.Donotmixoldand mew
batteries ordifferenttypesofbatteries.
Thereisrisk offireorexplosion.
nDonotrechargeordisassemblethebatteries. Donot
disposeofbatteries inafire.
Theymayburnofexplode.
nIftheliquidfromthebatteriesgetsontoyourskinor
clothes,washitwell withcleanwater.Donotusethe
remoteofthebatteries haveleaked.
Thechemicalinbatteriescouldcauseburnsorother
healthhazards.

Servicemanual
-3-
2.Function
The functionwill be
operatein anyoperation
mode.
Indoorunit
Operation ON/OFF byremotecontroller
Roomtemperaturesensor.
Pipetemperaturesensor.
Sensing byroomtemperature
Maintaintheroomtemperatureinaccordancewiththesettingtemperature.
Roomtemperaturecontrol
Indoorfanisdelayedfor5secat thestarting.
Starting temperaturecontrol
Restartingisforapprox.3minutes..
TimeDelay Safetycontrol
High,med,low,breeze.
Indoorfanspeedcontrol
LightupintheLED(LCD)foreachoperationmode.
The 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
Prevent thecoldwindat
thebeginning of unit start.
Anti-coldfunction
Auto-restartfunction
Self-diag. function

Servicemanual
-4-
The unitcanoperateincoolingmodeatlowambient temperatureconditions.
The unithas3minsdelaybetween continuouslyON/OFFoperations.
Outdoorunit
Powerrelay control
Lowambientkit
Birdtailpropellerfanmakestheoutdoorunit runmorequietly.
Lownoise airflowsystem
The hydrophilicfincanimprovetheheatingefficiencyatoperationmode.
Hydrophilicaluminumfin
It isonlyoperated intheheatingoperation modeexceptdefrostingoperation.
Dischargepipetemperatureprotect
Anti-rustcabinet
4way valvecontrol
Madefromelectrolyticzincsteel sheetandanti-rust coated components.
It protectsthevalvesandpreventswaterfromdripping.
Valveprotection
cover

Servicemanual
-5-
3.Dimension
3.1Indoorunit
Dimension
Mode W H L
5K 750 250 188
7K 750 250 188
9K 750 250 188
12K 750 250 188
16K 906 286 235
18K 906 286 235
21K 906 286 235

Servicemanual
-6-
3.2Outdoorunit
Dimension
Mode W H D L1 L2 L3
5K 700 535 235
458
280
540
7K 700 535 235
458
280
540
9K 700 535 235
458
280
540
12K 780 540 250
530
315
590
16K 780 540 250
530
315
590
18K 760 590 285 540 335 615
21K 845 695 335
560
360
735

Servicemanual
-7-
4.Specification
MSG-05CR
MSG-07CR
MSG-07HR
Ph-V-Hz
1,220-240V~,50Hz
1,220-240V~,50Hz
1,220-240V~,50Hz
CapacityBtu/h 5000 7000 7000
InputW 560 760 760
Rated currentA 2.6 3.6 3.6
EERBtu/w.h 9 9.2 9.2
CapacityBtu/h ----- ----- 7600
InputW ----- ----- 760
Rated currentA ----- ----- 3.4
COPW/W ----- ----- 10
A 3.8 5 5
A16 18 18
Model KH104VFHC
2P14C235ANA
2P14C235ANA
Type Rotary
Rotary
Rotary
Brand SHANGHAISENLIN
GDMatsushita
GD Matsushita
CapacityBtu/h 5700 7500 7500
InputW 590 725 725
Rated current(RLA) A 2.7 3.4 3.4
Locked rotorAmp(LRA)A 13 15 15
ThermalprotectorBF540-KB MRA98854 MRA98854
CapacitoruF 15
25
25
Refrigerant oilml MS-56 270
ATOMOSM60270
ATOMOSM60 270
Model RPG13H RPG13H RPG13H
Brand WELLING WELLING WELLING
InputW 36.5 36.5 36.5
CapacitoruF
1.2
F/450V
1.2
F/450V
1.2
F/450V
Speed(hi/mi/lo) r/min 1020/ 960/900 1020/ 960/900 1020/ 960/ 900
m3/h 300/270/240 380/350/320 380/350/320
dB(A) 32/30/28 32/30/28 32/30/28
Model YDK24-6T YDK24-6T YDK24-6T
Brand WELLING WELLING WELLING
InputW 70 70 70
CapacitoruF 333
Speedr/min 850 850 850
m
3
/h
1400 1400 1400
dB(A) 49 49 49
g480 580 620
MPa 2.6 2.6 2.6
Liquidside/Gasside mm
Ф
6.35/
Ф
9.53
Ф
6.35/
Ф
9.53
Ф
6.35/
Ф
9.53
Max.refrigerantpipe lengthm 10 10 10
Max.differenceinlevelm 5 5 5
℃17-30 17-30 17-30
℃18-45 18-45 -7-45
m
2
8-12 10-14 10-14
Operation temp
Ambienttemp
Applicationarea
Outdoornoise level
RefrigeranttypeR410A
Designpressure
Refrigerant
piping
Indoorairflow(Hi/Mi/Lo)
Indoornoise level (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoorairflow
Max.current
Startingcurrent
Compressor
Indoor
fanmotor
Model
Powersupply
Cooling
Heating
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-8-
MSG-09CR
MSG-09HR
MSG-12CR
Ph-V-Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
1,220-240V~,50Hz
CapacityBtu/h 9000 9000 12000
Input W 960 960 1230
Rated current A 4.5 4.5 5.7
EERBtu/w.h 9.4 9.4 9.8
CapacityBtu/h ----- 10000 -----
Input W ----- 980 -----
Rated current A ----- 4.4 -----
COP W/W ----- 10.2 -----
ASUNISO400 7 9
A 25 25 25
Model PH165X1CY-4DG2 2P18S225ANK PH200X2C-4FT
Type Rotary Rotary Rotary
Brand GD Toshiba GDMatsushita GDToshiba
CapacityBtu/h 9380 9920 11840
Input W 900 970 1135
Rated current(RLA) A 4.1 4.5 5.2
Locked rotor Amp(LRA) A 24 24 25
Thermalprotector
UP3QE0591-T61(internal)
External
（
MRA98745
）
Internal
CapacitoruF 25 30 25
Refrigerant oil ml SUNISO400 SUNISO350 440
Model RPG13H RPG13H
RPG13H
Brand WELLING WELLING Welling
Input W 36.5 36.5
36.5
CapacitoruF
1.2
F/450V
1.2
F/450V
1.2
Speed(hi/mi/lo) r/min 1100/1020/950 1100/1020/950 1350
m3/h 450/420/390 450/420/390
550/500/460
dB(A) 37/34/31 37/34/31
41/ 38/34
Model YDK24-6T YDK24-6T YDK24-6
Brand WELLING WELLING WELLING
Input W 55 55 72
CapacitoruF
2.5
F/450V
2.5
F/450V
2.5
F/450V
Speed r/min 800 800 850
m
3
/h
1500 1500 1800
dB(A) 50 50 52
g 600 650 730
MPa 2.6 2.6
2.6
Liquidside/Gasside mm
Ф
6.35/
Ф
9.53
Ф
6.35/
Ф
9.53
Ф
6.35/
Ф
12.7
Max.refrigerant pipe lengthm 10 10 10
Max.differenceinlevel m 5 5 5
℃17-30 17-30 17-30
℃18-45 -7- 45 18-45
m
2
14-21 14-21 18-26
Model
Powersupply
Cooling
Heating
Max.current
Startingcurrent
Compressor
Indoor
fanmotor
Indoor air flow(Hi/Mi/Lo)
Indoor noiselevel(Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor air flow
Operation temp
Ambienttemp
Applicationarea
Outdoor noiselevel
Refrigerant typeR410A
Design pressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-9-
MSG-12HR
MSG-16CR
MSG-16HR
Ph-V-Hz
1, 220-240V~,50Hz
220-240V~,50Hz
220-240V~,50Hz
CapacityBtu/h 12000 16000 16000
Input W 1230 1620 1600
Rated current A 5.7 7.5 7.4
EER Btu/w.h 9.8 9.9 10.0,2.9
CapacityBtu/h 13000 ----- 17500
Input W 1290 ----- 1650
Rated current A 6 ----- 7.6
COP W/W 9.8 ----- 3.1
A9.1 9.8 10
A 26 36 36
Model PH225X2C-4FT PH290X2C-4FT1 PH290X2C-4FT1
Type Rotary Rotary Rotary
Brand GD Toshiba GD Toshiba GDToshiba
CapacityBtu/h 13610 17435 17435
Input W 1305 1670 1670
Rated current(RLA) A 6.1 8 8
Locked rotor Amp(LRA) A 26 41.2 41.2
Thermal protector External Internal Internal
Capacitor uF 35 35 35
Refrigerant oil ml 430 520 520
Model RPG13H RPG25 RPG25
Brand Welling WELLING WELLING
Input W 36.5 53 53
Capacitor uF 1.2 1.5uF/450V 1.5uF/450V
Speed(hi/mi/lo) r/min 1350 1180 1180
m3/h 550/500/460 750/710/650 750/710/650
dB(A) 41/ 38 /34 41/38/35 41/38/35
Model YDK24-6 YDK36-6 YDK36-6
Brand WELLING WELLING WELLING
Input W 72 96 96
Capacitor uF
2.5
F/450V
2.5
F/450V
2.5
F/450V
Speed r/min 850 900 900
m
3
/h
1800 1900 1900
dB(A) 52 53 53
g 820 1110 1370
MPa 2.6 2.6 2.6
Liquidside/ Gas side mm
Ф
6.35/
Ф
12.7
Ф
6.35/
Ф
12.7
Ф
6.35/
Ф
12.7
Max. refrigerant pipe lengthm 10 10 10
Max. difference inlevel m 5 5 5
℃17-30 17-30 17-30
℃-7- 45 18-45 -7- 45
m
218-26 25-35 25-35
Model
Powersupply
Cooling
Heating
Max. current
Starting current
Compressor
Indoor
fan motor
Indoor air flow(Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)
Outdoor
fan motor
Outdoor air flow
Operation temp
Ambient temp
Applicationarea
Outdoor noise level
Refrigerant type R410A
Design pressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-10-
MSG-18CR
MSG-18HR
MSG-21CR
Ph-V-Hz
1,220-240V~,50Hz
1, 220-240V~,50Hz
1,220-240V~,50Hz
CapacityBtu/h 18000 18000 21000
InputW 1930 1920 2300
Rated current A 9.1 9 10.5
EERBtu/w.h 9.3 9.4 9.1, 2.7
CapacityBtu/h 20000 -----
InputW 1980 -----
Rated current A 9.2 -----
COP W/W 10.1 -----
A9.8 10 11.3
A36 36
42
Model SHY33MC2-U SHY33MC2-U
2V36S225AUD
Type rotary rotary
rotary
Brand Hitachi Hitachi
Matsushita
CapacityBtu/h 17620 17620 20600
InputW 1725 1725 2010
Rated current(RLA) A 8.1 8.1 9.5
Lockedrotor Amp(LRA) A 36 36 42
Thermal protector Internal Internal Internal
Capacitor uF 50 50
50
Refrigerant oil ml 600 600
680
Model RPG25 RPG25 RPG25
Brand WELLING WELLING WELLING
InputW 53 53
53
Capacitor uF 1.5uF/450V 1.5uF/450V
1.5uF/450V
Speed(hi/mi/lo) r/min 1180 1180 1265
m3/h 750/710/650 750/710/650
800/760/700
dB(A) 41/38/35 41/38/35
41/37/33
Model YDK25-6H YDK25-6H
YDK53-6
Brand WELLING WELLING WELLING
InputW 96 96
100
Capacitor uF
2.5
F/450V
2.5
F/450V
2.5
F/450V
Speedr/min 900 900
640
m
3
/h
2000 2000 2200
dB(A) 54 54 54
g1110 1370
1220
MPa 2.6 2.6
2.6
Liquidside/ Gassidemm
Ф
6.35/
Ф
12.7
Ф
6.35/
Ф
12.7
Ф
6.35/
Ф
12.7
Max.refrigerant pipelengthm 15 15 20
Max.differenceinlevelm 8 8 10
℃17-30 17-30 17-30
℃18-45 -7- 45 18-45
m
225-35 25-35 34-49
Model
Powersupply
Cooling
Heating
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Indoorairflow(Hi/Mi/Lo)
Indoornoiselevel (Hi/Mi/Lo)
Outdoor
fanmotor
Outdoorairflow
Operationtemp
Ambient temp
Applicationarea
Outdoornoiselevel
RefrigeranttypeR410A
Designpressure
Refrigerant
piping
Note:
Thenoisedateisbaseon hemi-anechoicchamber, duringactualoperation;thesevaluesarenormallysomewhat
different asaresultofambientcondition.
Theabovedesign andspecificationsaresubjecttochangewithout priornoticeforproductimprovement.

Servicemanual
-11-
MSG-21HR
Ph-V-Hz
1, 220-240V~,50Hz
CapacityBtu/h 21000
Input W 2300
Ratedcurrent A 10.5
EER Btu/w.h 9.1,2.7
CapacityBtu/h 23500
Input W 2400
Ratedcurrent A 11
COP W/W 2.9
A 14.5
A 42
Model 2V36S225AUD
Type rotary
Brand Matsushita
CapacityBtu/h 20600
Input W 2010
Ratedcurrent(RLA) A 9.5
LockedrotorAmp(LRA) A 42
Thermal protector Internal
Capacitor uF 50
Refrigerant oilml 680
Model RPG25
Brand WELLING
Input W 53
Capacitor uF 1.5uF/450V
Speed(hi/mi/lo) r/min 1265
m3/h 800/760/700
dB(A) 41/37/33
Model YDK53-6
Brand WELLING
Input W 100
Capacitor uF
2.5 F/450V
Speed r/min 640
m
3
/h
2200
dB(A) 54
g 1740
MPa 2.6
Liquidside/ Gas side mm
Ф
6.35/
Ф
12.7
Max. refrigerant pipe lengthm 20
Max. difference inlevel m 10
℃
17-30
℃
-7-45
m
2
34-49
Model
Powersupply
Cooling
Heating
Max. current
Startingcurrent
Compressor
Indoor
fanmotor
Indoor air flow(Hi/Mi/Lo)
Indoor noiselevel(Hi/Mi/Lo)
Outdoor
fanmotor
Outdoor air flow
Operationtemp
Ambient temp
Applicationarea
Outdoor noiselevel
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
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6.Operationlimits
6.1Coolingoperation
Outdoorunitairtemp.℃DB
Indoorairtemp. ℃DB
Note: The chart istheresult fromthe continuousoperation underconstantairtemperatureconditions.
However, excludesthe initialpull-downstage.
6.2Heatingoperation
Indoorairtemp. ℃DB
Outdoorunitairtemp.℃DB
Note: The chart istheresult fromthe continuousoperation underconstantairtemperatureconditions.

Servicemanual
-14-
However, excludesthe initialpull-downstage.

Servicemanual
-15-
7.Schematicdiagram andWiringdiagram
7.1 Schematicdiagram

Servicemanual
-16-
7.2 Wiring diagram
7.2.1Coolingmode
MSG-05CR, MSG-07CR, MSG-09CR,MSG-12CR
12(N)
COMPRESSOR
CAPACITOR
RED
OUTDOORUNIT
OVERLOAD
RELAY
Y＆ G
COMPRESSOR
S
C
BLUE
R
BLACK
RED
BLACK
INDOORUNIT
FAN
CAPACITOR
RED
Y＆ G
FAN
MOTOR
Y＆ GBLUE
BLACK
RED