Midea MDS70-V032_A0431-EU18-P1 User manual

Service Manual
Dryer
Model:MDS70-V032_A0431-EU18-P1
Note：
Before service the unit, please read this manual first.
Contact with your service center if meet problem

1PRECAUTION………………….………………..……………………………………………………….3
1.1SafetyPrecautions
1.2ServicingPrecaution
1.3 CautionsForSafety
2UNPACKINGWAYSOFMAINPARTS…………………………………………………………..5
3MALFUNCTIONSCODESANDEXPLANATIONS …………………………………...…..12
4 TROUBLESHOOTING………………………………………………………………………..………13
4.1TheControlpanelnotdisplayedafterselectingtheprogram
4.2Thedrumnotworkedafterselectingtheprogram
4.3Maintenancenon‐heatingmalfunction
4.4Drumworked，buttheeffectofdryingisnotgood
4.5Noise
4.6Peculiarsmellappearswhenthedryerisworking
5CHECKPOINTOFCIRCUIT……………………………………………………………….……..17
6SERVICETOOLS……..………………..................................................................18
7 APPENDIX………………………………………………………………………………………..……..19
Contents
2

1Precaution
3
When performing troubleshooting and part replacement during servicing, note the following safety
precaution.
1‐1.Safety Precautions
1‐1‐1.Use Genuine Parts
The components of the Tumble Dryer machine have safety features such as non‐combustibility and
voltagewithstanding.Therefore,alwaysusethesamepartassuggestedbythemaker.Inparticular,
be sure to use only designated parts in case of major safety parts identified by the marker.
1‐1‐2.Grounding
Connect the grounding wire to the shell plate, and bury it under at least 25cm of earth:
alternatively, connect the ground wire to the appropriate pin on a properly grounded power
receptacle. Never connect the wire to a telephone line, lightning rod, or gas pipe.
1‐2.ServicingPrecautions
1‐2‐1.ObserveWarnings
Besuretofollowspecialwarningandprecautionsthataredescribedonpartlabelsandinthe
owner’smanual.
1‐2‐2.PartsAssemblyandwiring
Besuretouseinsulationmaterial(suchastubeandtape).Andbesuretorestoreallpartsandwires
totheiroriginalposition.Takespecialcaretoavoidcontactwithsharpedges.
1‐2‐3PerformSafetyChecksafterServicing
Afterservicing,checktoseethatthescrews,parts,andwiringarerestoredtotheiroriginal
positions,andchecktheinsulationbetweentheexternalmetalsandthesocketplug.Inaddition,
placetheTumbleDryer machineinalevelposition(lessthan1(one)degree)topreventvibration
andnoiseduringoperations.
1‐2‐4.InsulationChecks
Pullouttheplugformthepowerreceptacle,pourwaterintothespintub,andthensetthetimer.
Checktoseethattheresistanceinsulationbetweentheterminalsoftheplugandtheexternally
exposedmetalisgreaterthan1M.
Note:Whenitisimpossibletoperforminsulationcheckwitha500Vinsulationresistancetester,
useothertestersforinspection.

1.3 CautionsForSafety
Symbol Meaning
WARNING
Indicatespossibilityofdeathorseriousinjuryofarepairtechniciananda
personnearbythroughthemisconductedwork,orofauserbyadefectof
the
productaftertheworkperformedbythetechnician.
CAUTION
Indicatespossibilityofinjuryorphysicaldamages*ofarepairtechnicianand
apersonnearbythroughthemisconductedwork,orofauserbyadefectof
theproductaftertheworkperformedbythetechnician.
GraphicSymbol Meaning
Caution:Read theoperator’smanualbeforeusingthisproduct!
caution,hotsurface
caution,riskoffire
UNPLUG
POWER
Unplugpowercordfortheworksuchasdisassemblingwhichisnot
unnecessarytopoweron.Donotholdtheplugbyawethand.Failingto
unplugmaycauseanelectricshock.
•Pleaseobservethefollowingnotesforsafety.
•Thesymbolsindicateasfollows.
4
1Precaution

5
OrdinaryInformation
1.Pleaseunplugthepowercordwhenyoudisassembleormaintaintheproduct；
2.Pleaseusetheregulationconnectorlugbetweenthewiresasmuchaspossible.Thencrimp
themfirmly bythepropertoolsandbundlethembytheinsulatingtape;
3.Whenyouplugthewires,pleaseinserttheplugtothebottomsoitisnoteasilytobe
unplugged;
4.Makesurethatthewirescannottouchthemobilepartsuchlikethedrum,andalsocannot
touch thesharp/hard‐edgedpartyandhigh‐heatpart(motor);
5.Pleasepreservethescrewswhenyoutakethemdown.Youwillusethemwhenyouinstall
thedryer;
66.ometimesyoumustoperatethedryerwhenitiselectriferous.Inthiscase,youmustbe
carefuland payattentiontotheelectricshock.
2UnpackingWaysOfMainParts

6
2UnpackingWaysOfMainParts
Stepsofdisassemblingmachine Pictures
1.Removethetopcovercomponentsofthecase
(1)Removethescrewcap;
(2)Removethescrewsfixedroofcomponent;
(3)Takeouttheroofcomponent.
2.Removethebackboardcomponentofthecase
(1)removethescrewsfixedbackboard;
(2)removethescrewsfixedthermostatsupport
component;
(3)pulledoutwireharnessassemblyandLinefirmand
terminalconnectedwithbackboard;
(4)takedownthebackboardcomponent.
2‐1.Removedthebackventflange
2‐2.Removethepowerline

7
Stepsofdisassemblingmachine Pictures
2‐3.Removethefilter
3.removethedoorcomponent(includingthedoor
hinge)
(1)removethescrewsfixeddoorhinge;
(2)takedownthedoorcomponentandhinge.
3‐1.removethedoorhinge,frontdoorandback
doorframe
4.Removetheinnertubassey
(1)Removethereinforcedplate;
(2)takeoutthebeltfromthemotorshaft;
(3)removedthescrewswhichisfixeddrumkitand
the
automaticthermostat;
(4)pullouttheterminalconnectedwirewithheating
pipe;
(5)takeoutthedrumkitandthebelt.
4‐1.Removethebodyofdrum,liftingbar,heating
pipe
coveranddrumshaft,etc
4‐2.Removetheheatingpipe,heatingpipecover
andits
Support
2UnpackingWaysOfMainParts

8
Stepsofdisassemblingmachine Pictures
5.Removethecontrolpanelcomponent
(1)removedthescrewsfixedcontrolpanelcomponent;
(2)PullouttheterminalsconnectedwirewithPCBboard.
5‐1.Removethecontrolpannel,PCBboardandbuttons,
etc.
6.Removethewiringharness(includingthethermostat)
(1)removeallthelinefirmfixedwires;
(2)pullouttheterminalsconnectedthewireswiththe
motorandthedoorswitch;
(3)takeoutthewires.
6‐1.Removetheautomaticthermostat
6‐2.Removethesupportcomponentsofthemanual
Thermostat
6‐3.Removethemanualthermostat
2UnpackingWaysOfMainParts

9
Stepsofdisassemblingmachine Pictures
7.Removethefrontplateassembly
(1)removethescrewsfixedfrontplateassembly;
(2)takeoutthefrontplateassembly
7‐1.removethedoorswitchplate
7‐2.Removethesupportcomponentsofthedrum
7‐3.Removethedoorgasketandfrontplate
8.Removethesideplatesandbaseassembly
(1)removethescrewsfixedsideplates;
(2)takeoutthesideplatesandbaseassembly.
8‐1.Removethefrontairduct
2UnpackingWaysOfMainParts

10
Stepsofdisassemblingmachine Pictures
8‐2.Removetheimpeller
8‐3.Removethefixd blockofthemotor
8‐4.Removethefixd statorofthemotor
8‐5.Removethetightspring
8‐6.Takeoutthemotorcomponents
8‐7.Removethecapacitance
2UnpackingWaysOfMainParts