Midea MSMBB-12CRDN1-MP0W User manual

RevisionA:1502250001,Contentupdated.
NationalElectricalCodeNFPA70/ANSI C1-1993 or currenteditionandCanadianElectrical
Code Part1CSA C.22.1.
•The information containedinthe manualisintended for usebyaqualified servicetechnician
familiar withsafetyproceduresand equippedwiththe propertoolsandtest instruments
•Installationor repairsmade byunqualified personscan resultin hazardstoyou and others.
•Failuretocarefully read and follow all instructionsinthismanual can result inequipment
SERVICEMANUAl
DC Inverter Air Conditioner
Table of Contents
1. Precaution
2. PartNames
3. Dimension
4. Refrigerant Cycle Diagram
5. PrintedCircuitBoardConnectorWiring Diagramof Outdoor Unit
6. Installation Details
7. Operation Characteristics
8. Electronic Function
9. Troubleshooting
10.Disassembly Instructions
Mini Split 3D
MSMBB-12CRDN1-MP0W
MSMBC-18CRDN1-MP0W
MSMBD-22CRDN1-MP5W
WARNING
•InstallationMUSTconformwithlocalbuilding codesor, intheabsenceof localcodes, withthe
malfunction, propertydamage,personalinjuryand/or death.
Models:
This Manual IsForQualified ServiceEngineer UseOnly

1. Precaution
.....................................................................................................................................................1
1.1SafetyPrecaution..........................................................................................................................1
1.2Warning..........................................................................................................................................1
2. PartNames
....................................................................................................................................................4
2.1ModelNames ofIndoor/Outdoor units..........................................................................................4
2.2Part namesofIndoor/Outdoor units..............................................................................................5
3. Dimension
.....................................................................................................................................................6
3.1Indoor Unit.....................................................................................................................................6
3.2Outdoor Unit...................................................................................................................................8
4. Refrigerant Cycle Diagram
..........................................................................................................................9
5. PrintedCircuitBoardConnectorWiring Diagramof Outdoorunit
.......................................................10
6 Installation Details
.......................................................................................................................................12
6.1Wrench torquesheet for installation............................................................................................12
6.2Connecting the cables.................................................................................................................12
6.3Pipe lengthand the elevation......................................................................................................12
6.4Installationfor the firsttime..........................................................................................................13
6.5Adding the refrigerant after runningthe systemfor manyyears.................................................14
6.6 Procedurewhenservicing theindoorunitrefrigerationcircuit...................................................14
6.7 Evacuationafter servicing theoutdoor unitrefrigerationcircuit.................................................16
7. Operation Characteristics
.........................................................................................................................18
8. Electronic function
.....................................................................................................................................19
8.1Abbreviation.................................................................................................................................19
8.2Displayfunction...........................................................................................................................19
8.3MainProtection............................................................................................................................20
8.4OperationModes and Functions .................................................................................................21
9. Troubleshooting
.........................................................................................................................................26
9.1Indoor Unit ErrorDisplay.............................................................................................................27
9.2Outdoor unit error display............................................................................................................28
9.3Diagnosisand Solution................................................................................................................31
10 Disassembly Instructions
.........................................................................................................................56
10.1Indoor unit..................................................................................................................................56
10.2Outdoor unit...............................................................................................................................60
Table Of Contents

1
1. Precaution
1.1SafetyPrecaution
nToprevent injurytotheuserorother
peopleand propertydamage, thefollowing
instructionsmust befollowed.
nIncorrect operationduetoignoring
instructionwill cause harm ordamage.
nBeforeservice theunit, besureto
readthisservice manualat first.
1.2Warning
ØInstallation
nDonot use adefectiveorunderrated
circuit breaker. Usethisappliance on a
dedicatedcircuit.
Thereisriskoffireor electricshock.
nForelectrical work,contactthedealer,
seller, aqualifiedelectrician, oran
authorizedservice center.
Donot disassembleor repair the product,
thereisriskoffireor electricshock.
nAlwaysgroundtheproduct.
Thereisriskoffireor electricshock.
nInstall thepanel andthecoverof
control boxsecurely.
Thereisriskoffireofelectricshock.
nAlwaysinstall adedicatedcircuit and
breaker.
Improper wiring or installation maycause
electricshock.
nUse thecorrectlyratedbreakerof
fuse.
Thereisriskoffireor electricshock.
nDonot modifyorextendthepower
cable.
Thereisriskoffireor electricshock.
nDonot install, remove, orreinstall the
unit byyourself (customer).
Thereisriskoffire, electricshock, explosion,
or injury.
nBecautionwhenunpacking and
installing theproduct.
Sharpedges couldcauseinjury,be especially
carefulofthe case edges and the finson the
condenser and evaporator.
nForinstallation, alwayscontact the
dealeroranauthorizedservice center.
nDonot install theproduct on a
defectiveinstallation stand.
nBesuretheinstallation area does not
deterioratewithage.
Ifthe base collapses,the airconditionercould
fall withit, causing propertydamage, product
failure, and personalinjury.
nDonot let theairconditionerrun fora
long timewhenthehumidityisveryhigh
and adoororawindowisleft open.
nTake caretoensurethatpowercable
couldnotbepulledout ordamagedduring
operation.
Thereisriskoffireor electricshock.
nDonot place anything onthepower
cable.
Thereisriskoffireor electricshock.
nDonot plugorunplug thepower
supplyplug duringoperation.
Thereisriskoffireor electricshock.
nDonot touch(operation)theproduct
withwet hands.
nDonot place aheaterorother
appliance nearthepowercable.
Thereisriskoffireand electricshock.
nDonot allowwatertoruninto
electrical parts.
It maycause fire, failureofthe product, or
electricshock.
nDonot storeoruseflammablegas or
combustibleneartheproduct.
Thereisriskoffireorfailureofproduct.
nDonot use theproduct inatightly
closedspace foralong time.
Oxygen deficiencycouldoccur.
nWhenflammablegasleaks, turnoff
thegasandopenawindowforventilation
beforeturntheproduct on.
nIf strangesoundsorsmoke comes
fromproduct, turnthebreakeroff or
disconnect thepowersupplycable.

2
Thereisriskofelectricshockor fire.
nStopoperationandclosethewindow
instorm orhurricane. If possible, remove
theproduct fromthewindowbeforethe
hurricanearrives.
Thereisriskofpropertydamage,failureof
product, or electricshock.
nDonot opentheinlet grill of the
productduringoperation. (Donot touchthe
electrostaticfilter,if theunit issoequipped.)
Thereisriskofphysicalinjury, electricshock,
or product failure.
nWhentheproduct issoaked, contact
anauthorizedservice center.
Thereisriskoffireor electricshock.
nBecautionthatwatercouldnot enter
theproduct.
Thereisriskoffire, electricshock, or product
damage.
nVentilatetheproduct fromtimeto
timewhenoperating it togetherwithastove
etc.
Thereisriskoffireor electricshock.
nTurnthemainpoweroff when
cleaningormaintainingtheproduct.
Thereisriskofelectricshock.
nWhentheproduct isnotbeusedfora
long time,disconnectthepowersupplyplug
orturnoff thebreaker.
Thereisriskofproduct damage or failure, or
unintended operation.
nTake caretoensurethatnobody
couldstepon orfall ontotheoutdoorunit.
Thiscouldresult inpersonalinjuryand
product damage.
ØCAUTION
nAlwayscheck forgas (refrigerant)
leakageafterinstallation orrepairof
product.
Low refrigerant levelsmaycause failureof
product.
nInstall thedrainhosetoensurethat
waterisdrainedawayproperly.
Abad connectionmaycause water leakage.
nKeeplevel evenwheninstalling the
product.
It can avoidvibration ofwater leakage.
nDonot install theproductwherethe
noise orhot airfromthe outdoorunit could
damagetheneighborhoods.
It maycause aproblemfor your neighbors.
nUse twoormorepeopletolift and
transport theproduct.
nDonotinstall theproductwhereitwill
beexposedtosea wind(salt spray) directly.
It maycause corrosiononthe product.
Corrosion, particularlyon the condenser and
evaporator fins, couldcause product
malfunctionor inefficient operation.
ØOperational
nDonot expose theskindirectlyto
cool airforlongtime. (Donot sit inthe
draft).
nDonot use theproduct forspecial
purposes, suchaspreserving foods,works
of art etc. It isaconsumerairconditioner,
not aprecisionrefrigerant system.
Thereisriskofdamageorloss ofproperty.
nDonot block theinlet oroutlet of air
flow.
nUse asoft clothtoclean. Donot use
harshdetergents, solvents, etc.
Thereisriskoffire, electricshock, or damage
tothe plasticpartsofthe product.
nDonot touchthemetalpartsof the
productwhenremoving theairfilter. They
areverysharp.
nDonot steponorput anything on the
product. (outdoorunits)
nAlwaysinsert thefiltersecurely.
Cleanthefiltereverytwoweeksormore
oftenif necessary.
Adirtyfilter reducesthe efficiencyofthe air
conditioner andcouldcause product
malfunctionor damage.
nDonot insert handsorotherobjects
throughairinlet oroutlet whiletheproduct
isoperated.
nDonot drinkthewaterdrainedfrom
theproduct.

3
nUse afirm stool orladderwhen
cleaningormaintainingtheproduct.
Becarefulandavoidpersonalinjury.
nReplace theall batteries intheremote
controlwithnewones of thesametype. Do
not mixoldand newbatteries ordifferent
types of batteries.
Thereisriskoffireor explosion.
nDonot rechargeordisassemblethe
batteries. Donot disposeof batteries ina
fire.
Theymayburnofexplode.
nIf theliquidfromthebatteries gets
ontoyourskinorclothes,washit well with
cleanwater. Donot use theremoteof the
batteries haveleaked.

4
2. PartNames
2.1ModelNamesofIndoor/Outdoor units
Series
Capacity Indoorunits Outdoorunits
Inverter
12k MSMBB-12CRDN1-MP0W MOB1-12CDN1-MP0W
18k MSMBC-18CRDN1-MP0W MOC-18CDN1-MP0W
22k MSMBD-22CRDN1-MP5W MOF1-22CDN1-MP5W

5
2.2Partnames ofIndoor/Outdoor units

6
3. Dimension
3.1Indoor Unit
Model W D H
MSMBB-12CRDN1-MP0W 810 mm
(31.89in) 200 mm (7.87in) 300 mm (11.81in)
MSMBC-18CRDN1-MP0W 980 mm
(38.58in) 225 mm (8.86in) 325 mm (12.80in)
MSMBD-22CRDN1-MP5W 1090 mm
(42.91in) 235 mm (9.25in) 338 mm (13.31in)

7
For MSMBB-12CRDN1-MP0W,
For MSMBC-18CRDN1-MP0W,
For MSMBD-22CRDN1-MP5W,

8
3.2Outdoor Unit
Morethan 60cm(23.6in)
Morethan 70cm(27.6in)
Morethan30cm(11.8in)
Morethan60cm(23.6in)
(Servicespace)
Fenceor
obstacles
Morethan 30cm(11.8in)
Note: The abovedrawingisonlyfor reference.The appearanceofyour unitsmaybe different.
Model W D H W1 A B
MOB1-12CDN1-MP0W 780mm
(30.7in) 250mm (9.8in) 540mm (21.3in) 843mm (33.2in) 549mm (21.6in) 276mm (10.9in)
MOC-18CDN1-MP0W 760 mm
(29.92in)
285 mm
(11.22in)
590 mm
(23.23in)
823 mm
(32.4in) 530 mm (50.87in)
290 mm
(11.42in)
MOF1-22CDN1-MP5W 845mm
(33.3in) 320mm (12.6in) 700mm (27.6in) 908mm (35.7in) 560mm (22.0in) 335mm (13.2in)