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Midea MDC100-CH21B/B05E-US, Service Manual, Page: 41 / 44

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Midea MDC100-CH21B/B05E-US Service Manual Download Page 41

Before repairing, use multimeter to judge circuit  stand of fail

. 

 

 

41 

No 

Part 

Picture 

Test Description 

parameters 

5 

Water 

Level 

Sensor 

Conducting both ends with a 

multimeter test case, disconnect the 

float at the bottom of the float. 

10mv-24vAC;10mv-

200vDC ,10VA 10W, 

10UA-1A(DC) 

6 

Door 

Switch 

Conducting both ends with a 

multimeter test case, under normal 

disconnect, press on. 

250V 16A  

7 

Motor 

Assembly 

 

220-240V, 

50/60Hz,150W, 

Copper wire, Class 

155 

8 

Cooling 

fan 

AC 220~240V~50/60Hz, 0.07/0.07A 

220-240VAC, 

50/60Hz 

6 Check Point of Electronic Components 

Summary of Contents for MDC100-CH21B/B05E-US

Page 1: ...Service Manual Tumble Heat Pump Dryer Model MDC100 CH21B B05E US Note Before maintaining this product please read the manual first Contact your service center if there s any problem...

Page 2: ...el can display 5 3 The heating system does not work 5 4 The dryer makes abnormal noise when operating 5 5 The dryer gives out abnormal smell when operating 5 6 Dryer s Full LED is lighting 5 7 E32 LED...

Page 3: ...withstanding Therefore always use the same part as suggested by the manufacturer Ensure sure to use the components from designated manufacturer especially the key safety components 1 1 2 Grounding Co...

Page 4: ...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 in a level position less th...

Page 5: ...ns Graphic Symbol Meaning ELECTRIC SHOCK Indicates a caution including a warning Specific instruction is followed by a graphic or characters in or near Symbol left warns an electric shock DO NOT DISAS...

Page 6: ...defect may occur Also a short circuit ignition or other danger to the customer may occur CHECK INSULATION RESISTANCE After repair measure insulation resistance between the charging part power cord pl...

Page 7: ...may cause an electric shock CONNECT GROUNDING WIRE Connect the grounding wire Failing to do so may cause an electric shock when a short circuit occurs Consult an electric work shop or a sales shop DO...

Page 8: ...o install the product Install the product securely and safely according to the electrical equipment technical standard and the wiring standard Incorrect work causes an electric shock or fires DO NOT P...

Page 9: ...for at least 10 minutes During this time check the dryer if the drum is turning right and there is no undesired noise After the programme is done open the door and check the drum with your hand If th...

Page 10: ...in the front of control panel with cross screwdriver Unscrew 4 screws on the top with cross screwdriver 10 UNPLUG POWER Unplug power cord for the work such as disassembling which is unnecessary to be...

Page 11: ...rminal Remove control panel Then unscrew 3 screws on the plastic cover and take away Unscrew 5 screws on the control panel Take off the planstic line and then remove 2 screws between the control panel...

Page 12: ...12 ITEM PICTURE Unscrew 2 screws on the door hinge Unscrew 11 screws on the inner ring Remove the inner ring Take off the door hinge Take off the door plunger 3 Disassembling Ways of Main Parts...

Page 13: ...ain pipe Unscrew 1 screw on the rear cover of drain pump kit Remove the rear cover of drain pump kit Pull out the connection pins on the drain pump Pull out the wire terminal of water level sensor 3 D...

Page 14: ...ITEM PICTURE Unscrew 1 screw on the pump cover Take off the pump cover Pull out the drain hose and overflow tube Take off the water level sensor Take off the drain pump 3 Disassembling Ways of Main Pa...

Page 15: ...crews on the top of the front panel Unscrew 8 screws at the back of side plates Remove the side plates left and right Unscrew 1 screw at the back of housing drawer Pull out the housing drawer 3 Disass...

Page 16: ...e brackets left and right Unscrew 1 screw on the back cover Unscrew 2 screws on the back cover Unscrew 1 screw on side plate and unplug all terminals Remove all of the screws on the back cover and tak...

Page 17: ...ve the impeller Unscrew 5 screws on the cabinet cover back Lift up pulley of the motor and remove the belt Separate the tub assembly Unscrew 4 screws on the bearing house assembly and remove the beari...

Page 18: ...he nut M14 and remove the bearing house assembly Separate the cabinet cover back from the tub Take off the felt ring seal on the cabinet cover back Unscrew the screw barrel Remove the lifter 3 Disasse...

Page 19: ...f the taper cap Remove the taper cap Remove the maintenance cover and take out the filter Remove the cooling fan cover Remove the filter lint assembly and door seal Remove 9 screws on the front door 3...

Page 20: ...lock and remove the front panel Pull out the wire terminals from door lock Pull out the wire terminal from NTC Pull out the wire terminals of humidity sensor and cooling fan Remove 5 screws of the fro...

Page 21: ...the lamp and remove the lamp cover Remove 3 screws on the humidity sensor support Pull out the wire terminals of the humidity sensor support and remove the wires Take off the felt ring seal on the fr...

Page 22: ...inal cover Remove all wires on the top of compressor Unscrew the grounding screw of the compressor Pull out the terminal of NTC Unscrew 2 screws and open the box Pull out the terminals of capacitances...

Page 23: ...the internal wire assembly from base assembly Remove all screws from the cover of heat exchangers and take it off Unscrew the nuts of compressor and remove the heat exchangers 2 persons to lift the un...

Page 24: ...rews and take off the motor Unscrew 3 screws and remove the blower collet of compressor Remove 1 screw and take off the fan Pull out NTC Remove the condenser clap plate Remove two foot screws 3 Disass...

Page 25: ...water level sensor consult 5 6 E32 The fault of humidity sensor Two parts of the sensor metal joint together Warn when the cycle completed Restorable Check the humidity sensor and change control panel...

Page 26: ...Circuit diagram of dryer 26 The circuit program 5 Troubleshooting...

Page 27: ...front NTC rear NTC P2 Motor communication BLDC motor model P3 PCB communication P4 Door switch P5 Compressor P6 Humidity sensor P7 Motor P8 Cooling fan and drain pump P9 Live wire Wiring connection fi...

Page 28: ...e fuse is damaged N Replace the fuse Y Find the P0 port check if the two contact points of controller are energized Y Power cord and wire components are damaged N Replace power cord and wire component...

Page 29: ...e wire components The tension spring is off or failure Install or replace the tension spring The motor capacitor terminal is not inserted Insert capacitor terminal The front support wheel is damaged R...

Page 30: ...eller Check the motor and motor capacitor Replace wire components Use the correct power Don t reuse the compressor after running in reverse Replace the HP system Check the compressor start capacitor p...

Page 31: ...r makes too much noise Replace the motor The impeller damage is damaged or the nut is loosened Replace impeller or screw up the nut The drum barrel shaft is damaged Replace drum The rolling bearing se...

Page 32: ...yer s Full LED is lighting The container is full Clear water container The pump s terminal is loosened or damaged Insert the terminals or replace the wire components The drain tube is not inserted in...

Page 33: ...cycle finished Y Y N 5 8 E33 LED is lighting The terminals of P3 are loosened Plug in terminals The terminals of front and rear NTC are loosened Plug in terminals The terminals of front or rear NTC i...

Page 34: ...ished only for BLDC model Restart the dryer OK Change the motor E50 LED is lighting Y N The terminals of motor and control panel are loosened Plug in the terminals The wire components are damaged Repl...

Page 35: ...1 Must use special equipment which is only for HFC 134a device avoid mixed with other refrigerants 2 Do not let the copper pipe unsealed more than 30min For the oil in compressor has very strong wate...

Page 36: ...36 Operation step Picture Take out the heat pump system and use exhaust plier to release refrigerant wear safety goggles and gloves Weld position Prepare new parts 5 Troubleshooting...

Page 37: ...eration step Picture Weld capillary drier filter and connect pipe and other parts Weld the suction and discharge pipes on compressor weld the capillary and connect pipe on heat exchangers 5 Troublesho...

Page 38: ...to the charge pipe 6mm 2 Connect the connector to the plug 3 Close V2 and V5 Valves open V1 V3 andV4 4 Start the pump Vacuum pumping time is not less than 60 minutes Plug Pump Pressure gage V1 charge...

Page 39: ...antity check the name plate of the dryer Seal the charge pipe Tidy the pipes and leaking check 1 Make sure the connect pipes are not interference with each other and not impact the compressor or base...

Page 40: ...multimeter to test the connection at both ends of the N and L 250VAC 50 60HZ 12A 2 NTC Measured across the NTC with a multimeter the resistance line with RT table 10 9 6 5 K 15 7 6 5 K 25 4 8 5 K 30 3...

Page 41: ...test case disconnect the float at the bottom of the float 10mv 24vAC 10mv 200vDC 10VA 10W 10UA 1A DC 6 Door Switch Conducting both ends with a multimeter test case under normal disconnect press on 250...

Page 42: ...heel Assembly 3 Other tools cross head screwdriver pliers and so on Common service tools 4 Vacuum pump welding torch exhaust plier sealing plier electronic scale butane and oxygen carrier pipe cutter...

Page 43: ...43 8 Appendix Machine function description program description the whole detailed parameter table fault codes etc Please refer to the instructions Note The schedule for the reference value...

Page 44: ...44 The end...

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