Midea MDC100-CH21B/B05E-US Manuale utente
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.
1. Precaution…………………………..…………………………………………………………………………………………………… 3
1.1 Precaution
1.2 Servicing Precautions
1.3 Cautions for Safety
2. Factory Pattern Detection ……………………………………………………………………………………………………….… 9
3. Disassembling Ways of Main Parts …………………………………………………………………………………………… 10
4. Malfunctions Codes and Explanations ……………………………………………………………………………………… 20
5. Troubleshooting …………………………..………………………………………………………………………………………… 21
5.1 The dryer breaks down and the control panel can not display
5.2 The drum does not spin while the control panel 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 is lighting after the cycle finished
5.8 E33 LED is lighting
5.9 E50 LED is lighting after the cycle finished(only for BLDC model)
5.10 E60 LED is lighting after the cycle finished(only for BLDC model)
5.11 Heat pump system parts repair
6. Check Point of Electronic Components ……..……………………………………………………………………..…………… 31
7. Service Tools …………………………..………………………………………………………….………………………………………… 32
8. Appendix…………………………..……………………………………………………………………………………..…………………… 33
Contents
2
1 Precaution
3
When executing troubleshooting or replacing components,
please note the following safety precautions:
1.1 Safety Precautions
1-1-1. Use Genuine Parts
The components of the machine have safety features such as non-
combustibility and voltage 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
Connect the grounding wire to the shell plate, and bury it at least
25cm underground : 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.
4
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 positions. Take
special care to avoid contacting with sharp edges.
1-2-3. Perform Safety Checks after Servicing
After servicing, check 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 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 from the power receptacle, put wet clothes into
the drum, and then set the timer. Check that the resistance
insulation between the terminals of the plug and the externally
exposed metal is greater than 1MΩ .
Note :When it is impossible to perform insulation check with a
500V insulation resistance tester, use other testers for inspection.
1 Precaution
1.3 Cautions for Safety
Symbol
Meaning
WARNING
• Indicates possibility of death or serious injuries to repair
technicians or people nearby for improper operations, or to the
users by the defective products after technician operations.
CAUTION
• Indicates possibility of injuries or physical damages to repair
technicians or people nearby for improper operations, or to the
users by the defective products after technician operations.
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
DISASSEMBLE
•
Indicates prohibition (act must not be conducted).
Specific instruction is followed by a graphic or characters in or near.
Symbol left warns not to disassemble.
UNPLUG
POWER
•
Indicates forcing (act must be conducted).
Specific instruction is followed by a graphic or characters in or near.
Symbol left warns to unplug the power cord.
•Please observe the following notes for safety.
•The symbols indicate as follows.
5
1 Precaution
•Please observe the following notes for safety.
•The symbols indicate as follows.
WARNING
OUT OF CHILD
• Advise the customer to keep children out of the work place.
Children may be injured by a tool or disassembled part.
UNPLUG POWER
• Unplug power cord for the work such as disassembling which
is unnecessary to be power on. Do not hold the plug by a wet
hand.
Failing to unplug may cause an electric shock.
USE
REPAIR PARTS
• Use the specified repair parts when repairing the product.
Otherwise, a malfunction or 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 plug) and the non
-
charging metallic
part (ground) with an insulation resistance meter (500V). The
resistance shall be 10MΩ or more.
Failing to check the insulation resistance may cause a short
circuit, electric shock or other diseases to the customer.
DO NOT MODIFY
• Do not modify the product.
An electric shock or ignition may occur.
DO NOT
DISASSEMBLE
ANDREPAIR
• Only a repair technician can disassemble and repair.
An electric shock, ignition or malfunction may cause injury.
1.3 Cautions for Safety
6
1 Precaution
WARNING
USE EXCLUSIVE
SOCKET
• Use an exclusive socket for the machine.
Otherwise, an electric shock or ignition may occur. Sharing the
same socket with other instrument causes heating of a branch
socket and may result in a fire.
CONNECT
GROUNDING WIRE
• Unplug power cord for the work such as disassembling which
is unnecessary to be power on. Do not hold the plug by a wet
hand.
Failing to unplug 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 NOT USE WET
PLACE
• Do not install in a bath room or a place exposed to wind or
rain.
An electric shock or a short circuit may cause a fire.
DO NOT SPLASH
WATER
• Do not pour or immerse electrical parts into water or liquid
solution.
An electric shock or ignition may occur.
REMOVE DUST
• Wipe off dust adhering to the plug of power cord.
Dust may cause a fire.
7
1.3 Cautions for Safety
1 Precaution
WARNING
AVOID
INFLAMMABLE
• Do not put inflammable into the tumble dryer.
Do not put cloths stained with kerosene, gasoline, benzene,
thinner, alcohol, etc.
It may cause a fire or explosion.
DO NOT
TUNCH
THE DRUM
• Do not touch the drum before the drum is cool down.
CAUTION
INSTALL
CAREFULLY
• Ask an electric work shop to 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 PULL
• Do not pull the power cord when unplugging.
Hold the power plug to unplug.
An electric shock or short circuit may cause a fire.
DANGER HAND
• Do not put your hand under the tumble dryer during
operation.
There is a rotary part under the machine which may cause an
injury.
8
1.3 Cautions for Safety
1 Precaution
When the repairing work is done, select the “Time” programme to operate
the dryer 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 the drum is
warm, it means the dryer operates well.
2 Factory Pattern Detection
9
ITEM PICTURE
Unscrew 2 screws at the back
of the
top cover assembly.
Re
move the top cover
assembly
.
Pull out the drawer.
Unscrew 2 screws 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 power on. Do not hold the plug
by a wet hand.
Failing to unplug may cause an electric shock.
WARNING
3 Disassembling Ways of Main Parts
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