Midea C01 User manual

Service Manual
Washing Machine
Model:C01
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 FACTORY PATTEN DETECTION …………….………………………………………………. 7
3 UNPACKING WAYS OF MAIN PARTS……………………………………………………… 10
4 MALFUNCTIONS CODES AND EXPLANATIONS ……………………………………… 18
5 TROUBLESHOOTING …………………………………………………………………………… 20
5.1 Maintenance non-heating malfunction
5.2 Door non-locked & its maintenance
5.3 Door non-locked & its maintenance
5.4 Heating beyond the setting temperature its maintenance
5.5 Maintenance of non-drain or drain exceed the setting time
5.6 Water inlet overflow malfunction maintenance
5.7 Drum non-rotating malfunction maintenance
5.8 Maintenance water inlet and water outlet at the same time
6 CHECK POINT OF CIRCUIT …………………………………………………………………… 30
7 SERVICE TOOLS……..………………............................................................................... 31
8 APPENDIX………………………………………………………………………………………….. 32
Contents
2

1 Precaution
3
When performing troubleshooting and part replacement during servicing, note the
following safety
precautions:
1.1 Safety Precautions
1.1.1 Use Genuine Parts
The components of the washing machine have safety features such as non-combustibility
and voltage with standing. Therefore, always use the same part as suggested by the maker.
In particular 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 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 washing machine in a level position (less than 1 degree)to
prevent vibration and noise during operations.
1.2.4 Insulation Checks
Pull out the plug from 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 insulation check with a 500V insulation resistance
tester, use other testers for inspection.

1.3 CAUTIONS FOR SAFETY
•Please observe the following notes for safety.
•The symbols indicate as follows.
4
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.
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.
DO NOT Symbol left warns not to disassemble.
UNPLUG
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.
* Means secondary damages of property, furniture , domestic animal and pet.
Symbol Meaning
OUT OF CHILD
Advise the customer to keep children out of the work place.
Children may be injured with a tool or a disassembled part.
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.
USE REPAIR PARTS
Use the specified repair parts when repairing the product.
Otherwise , amalfunction or a defect may occur.
Also , a short circuit , ignition or other danger to the
customer may occur.
1 Precaution

5
WARNING
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 10M or more.
Failing to check the insulation resistance may cause a short
circuit, electric shock or other diseases to the customer.
DO NOT MODIF
Do not modify the product.
An electric shock or ignition may occur.
DO NOT MODIFY
Only a repair technician can disassemble and repair.
An electric shock, ignition or malfunction may cause injury.
USE EXCLUSIVE
SOCKET
Use an exclusive 110 VAC/15 A socket for the washing
machine.
Use an exclusive 220VAC/17A socket for the washing
machine.
Otherwise , an electric shock or ignition may cause. Sharing
the same socket with other instrument causes heating of a
branch socket and result in a fire.
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 adhered to the plug of power cord.
Dust may cause a fire.
AVOID
INFLAMMABLE
Do not put inflammable into the washing tub.
Do not put cloths stained with kerosene, gasoline, benzene,
thinner, alcohol, etc. It may cause a fire or explosion.
1 Precaution

6
WARNING
DO NOT TOUCH
Do not touch the laundry before the spin basket stops
completely.
The laundry entangles your hand causing an injury even if
the basket rotates slowly. Pay special attention to children.
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 and a fire.
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 insert your hand under the washing machine during
operation.
There is a rotary part under the machine which may cause
an injury.
WATER LEAKAGE
Before starting washing, open the faucet and check water
supply hose joint which shall not be loosened for no water
leaks.
The loose screw or hose joint may cause water leakage
resulting in an unexpected damage.
1 Precaution

2 FACTORY PATTEN DETECTION
7
2.1 Service mode
Before entering into service mode, make sure no water remains in the inner drum, if
not, select drain only program to drain them out.
Turn on the machine and take turns [K3] [K5] [K3] [K5] buttons in 30s.
Press [K1] or [K2] to select test program. Press [K8] button to confirm your selection
and start the selected test. If you want to go back to test selection interface, press the
[K8] button to cancel previous selection.
2.1.1 Version switchover (t01)
1) Enter into service mode, LED displays “t01”
2) Press [K8] button, LED displays “0xx”.x means current version.
3) Press [K2] to confirm switchover.
4) Press [K3] to change version.
5) Press [K2] button continuously for 3s to confirm your change.
6) Press [K8] button to close all output and exit this program. LED displays “t01”.
2.1.2 Error code checking (t02)
1) Enter into error code mode, LED displays “Err”. Press [K8] button and LED displays
EXX(x=1,2,3….)
2) Press [K1] to show the last code and press [K2] to show the next code. The latest 10
error codes
can be found in system, and same error code is recorded one time even if it occurs
more than one time
3) If no error information found, LED shows E00.
4) Press [K2] and [K3] button at the same time continuously for 3s, after hearing the
beep, all the error codes records deleted, LED displays E00.
5) Press [K8] button to exit, LED display t02.
2.1.3 Version information checking (t03)
Version information checking is used to show the current version information stored in
nonvolatile memory applications.
1) Enter into service mode, LED displays “cod”.
2) Press [K8], LED displays project number.
3) Press [K1] button, LED displays version number.
4) Press [K8] to go back to version information checking status, LED display “t03”.
K1 K2 K3 K4 K5 K6
K7
K8

8
2.1.4 UI Checking (t04)
1) Press [K8] button to illuminate the whole LED display.
2) Press [K1] button, the whole LED display flashes.
3) Press [K8] to stop flash, LED display “t04”
2.1.5 Drain pump checking (t05)
1) Enter into service mode, LED displays “pup”.
2) Press [K8] button to drain out all the remaining water. If all water drained out, LED
displays “god”，and 6 minutes later ,if there is still water remains in it, LED displays
“FP”.
3) Press [K8] button to exit, LED displays “t05”
2.1.6 Pressure switch checking (t06)
1) Enter into service mode, drain out the water, LED displays LL.
2) Press [K8] button to activate inlet valve. LED displays level frequency once water
lever get the main wash level,after the water level reaching the overflow line, drain out
all the water.
2.1.7 Water temperature sensor and heater checking (t07)
1) Press [K8] button to activate the main inlet valve and get the water lever to heating
level then turn on the heater and 5 min later turned off automatically.
2) After heater turned on, LED displays the current temperature. Detect the real
temperature of inner drum and check with the numbers on the display.
3) Press [K8] button to exit, LED displays “t07”
2.1.8 Inlet valve checking (t08)
1) Enter into service mode, drain out the water, LED displays “UU”. Press [K8] button,
LED displays “out”.
2) Press [K1] button, LED displays “u2” and switch on prewash valve for 5s.
3) Press [K1] button, LED displays “u1” and switch on the main wash inlet valve for5s.
4) Press [K1] button to switch on main wash and prewash valve and get the water lever
to setting level, then drain out the water.
2.1.9 Rotating checking (t09)
1) Enter into service mode, LED displays “tUB”
2) Press [K8] button, inner drum rotates in 45r/m clockwise for 10s and stop for 10s,
over and over again.
3) Press [K8] button to turn off the motor and exit, LED displays “t09”.
2.1.10 Spin speed checking (t10)
1) Press [K8] to enter into service mode, LED displays “spn”.
2) Press [K8] button again, the number on the display goes up in the same pace with
the real speed and when it reach 400rpm, you need to press [K1] button to get the
machine to reach its target speed.
( If declared speed ≥1000rpm, target speed is 1000rpm and if declared speed ＜
1000rpm,target speed is its declared speed)
3) Press [K8] button to exit and LED displays “t10”.
2 FACTORY PATTEN DETECTION

9
2.2 Self-check
- Turn on the machine , to take turns 【K3】【K5】【K3】【K5】,the door locked,
enter the test mode, display the T01, press the 【K1】or 【K2】to show “T15”.
- Press [K8] button, put into the function test mode, display TST, then press again,
display version number and project number;
- Press 【K1】or 3 seconds later again, display the temperature of NTC;
- Press 【K1】or 3 seconds later again, display water level frequency;
- Press 【K1】or 3 seconds later again, display “U2”,main wash valve is open;
- Press 【K1】or 3 seconds later again, display “U1”,main wash valve is close ,pre-
wash valve is open;
- Press 【K1】or 3 seconds later again, display “PuP”, pre-wash valve is close, drain
pump is open;
- Press 【K1】or 3 seconds later again, display “HEA”, drain pump is close , HTC is
open;
- Press 【K1】or 3 seconds later again, the heater is close ,the motor rotates forward 3
seconds, stop 2 seconds, display the motor speed, accelerate to 1000 rpm;
-Press [K8], display the “T15”, back to the function test mode.
- Exit need to close the power.
2.3 Marketing-show (no-water testing)
The sales display mode can not be used in this PCB.
2 FACTORY PATTEN DETECTION

3. UNPACKING WAYS OF MAIN PARTS
1. Undo the back cover
2. Undo top cover
3. Undo the control panel
4. Undo the lower panel
5. Undo the door lock
6. Undo the front plate
7. Undo the facade counterweight
8. Undo the gasket
9. Undo the PCB panel
10. Undo the detergent box
11. Undo the inlet valve
12. Undo the pressure
13. Undo the pulley
14. Undo the absorber pin
15. Undo the filter
16. Undo the drain pump
17. Undo the heater
18. Undo the NTC
19. Undo the door glass
20. Undo the panel support
21. Undo the drum tub assembly
22. Undo the absorber
23. Undo the motor
3 UNPACKING WAYS OF MAIN PARTS
10

111111
Operation Picture
1
. Undo the back cover
Undo four screws fit
between back plate and
cabinet, and then pull out.
2
. Undo the top cover
I.Undo 2 screws fit back
Cabinet.
II.Push back the top cover
15mm until it leaves away
from the control
panel,
and then take it down.
3
. Undo the control panel
I.Departing the top cover
II.Draw out the detergent
drawer.
III.Loosen two screws fit
on the control panel .
IV.Loosen two screws fit
on the control panel.
V.Take out the control
Panel inclined from the
panel .
3 UNPACKING WAYS OF MAIN PARTS

1212
4
. Undo the service plate
box
I.Open the filter
cover,
release the screw on
the
lower panel.
II.Turn the washing
machine back at an angle,
pinch the clasp ,and push
it out.
5
. Undo the door lock
I.Open the door of
washing machine.
II.Take the outer gasket
Take the outer gasket
III.Remove two screws on
the door lock, and take
down the door lock.
IV.Take out the door lock
and draw out the plug.
6
. Undo the front plate
I.Remove the service
plate
box
.
II.Undo five screws in
front plate
III.Put the front plate up to
the clasp of the front plate
away from the loading
holder, and then take off
the front plate.
7.
Undo the lower
counterweight
I.Undo the front plate
II.Remove
four screws pull
out the lower
counterweight.
3 UNPACKING WAYS OF MAIN PARTS

13
3 UNPACKING WAYS OF MAIN PARTS
1313
8. Undo the gasket
I.Undo
the top cover,
control panel, service
plate box, machine door
and the front plate.
II.Remove
the outer gasket
clamp between the door
seal and the front plate.
III.Loosen
the inner gasket
clamp between the door
seal and the front of the
outer tub.
9. Undo the PCB panel
I.Undo the control panel
II.remove 5 screws
between the control panel
and PCB panel
10
. Undo the detergent box
I.Undo
the top cover and
the control pane
II.Release the hose clamp
and pull out the inlet hose.
III.Release
the hose clamp
and pull out the detergent
box hose, and then take
out the detergent box.
11
. Undo the inlet valve
I.Remove the top cover
II.Undo 2 screws between
cabinet and inlet valve.
III.Release the clamp
fixing
the inlet valve and the
inlet hose, and then pull
out the inlet hose.
IV.Take out the inlet
valve

141414
12
. Undo the pressure switch
I.Undo the top cover
II.Pull out the plugs on the
pressure switch.
II.Loosen the pressure
switch hose clamp, and
pull out the hose from the
pressure switch interface.
III.Rotate the pressure
switch anticlockwise by
90º, and then pull out the
pressure switch.
13
.Undo the pulley
I.Undo the back cover
II.Rotate the pulley and at
the same time pull out the
belt.
II.Remove the screw on
the
pulley and then take
down
the pulley.
14
.Undo the upper
counterweight
I. Undo the top cover
II. Remove four screws fit
on the upper
counterweight and then
pull out the upper
counterweight.
15
. Undo the absorber pin
I.Undo the front plate
II.Use pliers to pinch the
absorber pin’s
protuberance, and knock
the absorber pin out from
back lightly; in the same
way, remove the other
two.
3 UNPACKING WAYS OF MAIN PARTS

151515
16
.Undo the filter
Open the filter cover.
Rotate the filter knob
anticlockwise, and then
pull out the filter.
17. Undo the drain pump
I.Undo the top cover,
control panel, service
plate box
and front plate.
II. Remove four screws
and
plug and nip out clamp
between drain hose and
the drain pump, and then
pullout the drain hose.
18
.Undo the heater
I.Undo the top cover
II.Undo control panel,
service plate box, motor
and front plate
III.Remove the bolt and
pull out the heater plug.
3 UNPACKING WAYS OF MAIN PARTS

161616
19
. Undo the NTC
I.Undo the top cover,
control panel, service
plate box and front plate.
II.Undo the NTC with
special tools.
20
.Undo the door glass
I. Open the door, remove
two screws fixing the
hinge and front plate,
and
then remove the door.
II. Remove eleven
screws
on the inner door.
III. Remove the outer
door
and the inner door
with
special tool.
21
.Undo the panel support
I. Undo the top cover
II.Undo the control panel.
III.Remove two screws
fixing the panel support,
and then remove it.
22.Undo
the drum tub
assembly
I.Remove the motor
II.Pull out the heater.
III.Remove the belt.
VI.Remove the screws
fixing the pulley, and then
take out the pulley.
V.Remove the screws
fixing
the front and rear tub,
and
then remove the tub.
VI.Remove the inner drum
kit.
3 UNPACKING WAYS OF MAIN PARTS

171717
23
.Undo the absorbers
I.Lift out the outer tub kit.
II.Undo the absorbers pin
between absorber and
rear tub, remove the
absorbers.
24
.Undo the motor
I.First let the machine lie
down on the back and
then pullout the motor
wire and grounding wire.
II.Use spanner to remove
the motor screws, and lift
up the motor with the
other hand in case of
falling to the drain pump
3 UNPACKING WAYS OF MAIN PARTS

18
Malfunction
code Reason Description Solution
E10
Inlet water
overtime
The water level
doesn’t changed in 3
minutes during filling
the water.
Open the water tap, to check if the
inlet hose is squashed or kinked,
check the filter in the inlet valve is
blocked or not; check if the water
pressure is too low.
E12
Overflow
The water level is
higher than the
overflow water level.
Check the water inlet valve, Valve fail
E20
Fault connection
of the drain pump
The
water level
doesn’t changed in 3
minutes during drain
the water.
Check the drain pump.
Check the filter of the drain pump
to prevent jam.
Check the drain hose to prevent
jam.
E21
Overtime 3min
of the drainage
The
water level.
Overtime draining
E30
The door has not
been closed over
3 times
Fail to lock the door
lock for 6 times when
the PCB ties to lock the
door lock after you
press the Start keys.
Check the door hook and the door
lock to get correct location.
E31
Don’t unlock the
door lock
Fail to unlock the door
lock 6 times
Check the door Lock
E33
Water level
sensor fail
The frequency of the
water level sensor is
out of the spec.
Check the water level sensor
E34
Temperature
sensor fail
The temperature
sensor(NET) get broken
Check the PCB and the motor
E60
The motor don’t
drive
The motor don’t drive
for
5 times
Water temperature sensor
cutting
-
out
Check the PCB and the motor
Check the motor communicate
wire
E61
The speed don’t
transmit signal
The PCB can’t get
speed transmit signal
when the motor drive
Check the speed transmit line of
the motor to prevent fall
of
Check the PCB and the motor
Check the motor communicate
wire
4 MALFUNCTION CODES AND EXPLANATIONS
Schedule of failure alarm

19
Malfunction
code Reason Description Solution
E62
The speed
don’t transmit
signal
abnormality
Triac
get broken
Check the speed transmit line
of the motor to prevent fall of
Check the PCB and the motor
Check the motor communicate
wire
E70
The button get
stuck when
press it over 10
second
The Power
button
lodge in the panel
Check the button install
and
control
4 MALFUNCTION CODES AND EXPLANATIONS

5 TROUBLESHOOTING
20
Fault tree
1. Maintenance non-heating malfunction
Whether the pressure
switch is well or not
Change the control
panel
Whether the
connect is well
heating Reliable connection
Whether NTC is
short or open
circuit Change NTC
Whether to set up
non-heating Choosing new heating
temperature
Non-heating
Change the heater
Whether the heater
is well
Y
Y
Y
Y
Y
N
N
Y
N
N