Midea MAC160-S2802TPS/FM User manual

WASHING MACHINE
SERVICE MANUAL
CAUTION：
READ THIS SERVICE MANUAL CAREFULLY TO DIAGNOSE
TROUBLES CORRECTLY BEFORE OFFERING SERVICE.
CONTACT WITH YOUR SERVICE CENTER IF HAVE PROBLEM.

1 SAFETY AND PRECAUTIONS
2 TEST MODE ---赫英石
3 DIASSEMBLY INSTRUCTION ---王亮 替换维修的照片
4 ERORR CODES AND EXPLANATIONS ---赫英石
5 TROUBLE SHOOTING
6 HOW TO CHECK THE ELECTRIC PARTS ---郭教鹏 确认电器件的信息
7 CHECK POINT AFTER SERVICE
8 EXPLOADED VIEW AND BOM LIST
9 SPECIFICATIONS
Contents
2
IMPORTANT SAFETY NOTICE
This service information is intended for individuals possessing
adequate backgrounds of electrical, electronic and mechanical
experience.
Any attempt to repair this appliance may result in personal injury or
property damage.
The manufacturer or seller can not be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.

•Please observe the following notes for safety.
•The symbols indicate as follows.
WARNING
No dismantling
• Please do not disassembly and assembly the machine
without
authorization.
No touching
• Please do not insert your hand and take out clothes inside
the spin barrel before it is fully stopped.
No dampness
• Please do not install the machine in damp and raining
environment to avoid electric shocking, catching fire, faults
and distortion accidents.
No rinsing
• Please do not directly rinse the machine with water when
cleaning.
Prohibited
• Please do not let children climb the machine or peer into the
rotating spin barrel to avoid accidents.
Prohibited
• It is prohibited to wash the clothes touching with kerosene,
gasoline, alcohol and other flammable materials.
1 SAFETY AND PRECAUTIONS
3

WARNING
Prohibited
• Please do not damage power flexible cord and power plug to
avoid electric shocking, short circuit and catching fire.
• Regularly clean the power plug to remove dust and dirt to
avoid contact failure.
Earthing
• Please well connect the earth line of socket to avoid electric
shocking by accidental leakage.
（earthing）
• Please insert the power plug tightly.
Pull out the plug
• Please pull out plug from the socket if the machine is not in
use.
Smoke and
fire prohibited
• Please do not place on the washer burning candle, mosquito-
repellent incense, cigarette and other flammablethings, as well
as electric stove, air heating fan and other heating sources.
4

WARNING
• Please use correct power source.
Wet hands are
prohibited
• Please do not pull out or insert the plug with wet hands to
avoid electric shocking.
5
CAUTION
• Please ensure that the water inlet pipe is connected and the
tap is opened before washing clothes.
Prohibited
•The water temperature shall not exceed 50℃ when washing
with warm water.
Prohibited
•Customers are not allowed to change the power line without
permission.

CAUTION
Prohibited
• Customers are not allowed to change the power line without
permission.
Prohibited
• It is strictly prohibited to place and sit children or lay weights
on the washer.
• Please do not pull the electric cord when pulling out the plug.
Prohibited
• Please do not wash down jacket, raincoat, fishing coat and
similar clothes in the washer.
6

2 TEST MODE
Before starting test mode, the water level sensor should be installed.
Otherwise, the unit will alarm and stop running test mode.
Test 1：Anytime you enter the test mode, all lights and digital will be ON
and then flash with 6 beeps. If any light is not ON, replace the PCB. If the
digital in not 88 displayed, replace the PCB. If you can’t hear the beep,
replace the PCB.
Test 2：Washing test, to check the motor and rotate directions.
In 9 seconds after entered test mode, press button Soil Level to enter
Washing test.
The Normal cycle light, Wash procedure light will be ON in Washing test.
The digital time will display 3 indicating that the remaining time is 3
minutes.
The motor and impeller will rotate in two-directions in turn.
The test mode will end with 6 beeps and Done light flashing after 3
minutes’ operation. All lights will be OFF when the lid is opened.
Test 3：Spinning test, to check clutch and pump.
In 9 seconds after entered test mode, press button Temp to enter Spinning
test.
The Normal cycle light, Spin procedure light will be ON in Spinning test.
The digital time will display 3 indicating that the remaining time is 3
minutes.
The pump will start in 8 seconds. Another 2 seconds later, the unit will start
Spinning test.
The test mode will end with 6 beeps and Done light flashing after 3
minutes’ operation. All lights will be OFF when the lid is opened.
Test 4：Inlet valve test, Software version check
In 9 seconds after entered test mode, press button Fabric Softener to enter
Inlet valve test.
7

2 TEST MODE
The inlet valve test will start. The valves will be ON and water can enter the
unit. Check the detergent compartment, softener compartment and the
basket water filling to check every valve.
Close the cold water faucet to see if the hot water valve is working or not.
At the same time, the digital display will show the software version. There
are two software versions: one is for display PCB displayed with “U-“ and
two digital followed; the other one is for power PCB displayed with “B-
“ and two digital followed.
The test mode will end with 6 beeps and Done light flashing after 1
minute’s operation. All lights will be OFF when the lid is opened.
Test 5：Auto-sensing check
In 9 seconds after entered test mode, press button Delay to enter auto-
sensing test.
The unit will check the auto-sensing function in this test mode.
The digital will display test result if this function is right.
Replace the Power PCB if there isn’t any display on the digital after the
test in 3 seconds.
The test mode will end with 6 beeps and Done light flashing. All lights will
be OFF when the lid is opened.
8

9
1
2
3
4
5
678
Number
Tools
1
13# sleeve spanner
2
8# sleeve
spanner
3
10# sleeve
spanner
4
6# inner six angle wrench
5
Needle
nose pliers
6
pliers
7
cross screwdriver
8
slot type screwdriver
3 DIASSEMBLY INSTRUCTION
Service tools needed

ITEM PICTURE HOW TO DISASSEMBLE
1.BACK COVER ①Unscrew the screws on the
back cover ( Red circle part) and
then take out the rear cover.
2. The earth screws,
capacitor screws, and
then pull out the air
pipe.
( make the air pipe
and
suspend poles
separate)
①Unscrew the earth screws to
make the earth wire
subassembly
and cabinet separate
②Unscrew the capacitor screws,
take down capacitor catch
③Pull out the air pipe to make
the air pipe and suspend poles
separate (When you install the
air pipe, you remember to coat
adhesive for preventing leakage)
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.
WARNING
10
3 DIASSEMBLY INSTRUCTION

ITEM PICTURE HOW TO DISASSEMBLE
3
Pull the insulating
bag and
then remove the
wire
connector.
①
Put the Nylon
cable ties, pull the
insulating bag
②
Remove the
crimp terminal by
pliers .
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.
WARNING
11

ITEM PICTURE HOW TO DISASSEMBLE
4 Top cover
①
Unscrew the screws on the Top cover
（
normally 2 sides 2 back. It varies
according to different designs
）
②
Take down the top cover, and put it
in the right place ( avoid to scratch the
top cover)
5
Remove the PCB
①
Unscrew the controller board
screws, pull out the controller
board terminals(When you
plug wire and connect wires,
you must insert terminals to
the roots for not easily pulling.)
②
Take down the controller board
and the front control panel
Separately
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.
WARNING
12

ITEM PICTURE HOW TO DISASSEMBLE
6
Take down the
back control
panel, cover switch,
water
inlet valve,
water level sensor,
and internal wire
subassembly
①
Remove the back control panel
screws, and take out the back
control panel.
②
Remove the cover switch screws.
③
Take down the water inlet valve.
④
Remove the water level sensor
Screws.
⑤
Take out the internal wire
Subassembly.
7 Door Lid
①
First remove the door bolt.
②
Take down the lid
③
Take out the spring
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.
WARNING
13

ITEM PICTURE HOW TO DISASSEMBLE
8
outer tub cover
①
Unscrew the outer tub
cover screws, and take
out the outer tub cover
9 Impeller
①
Unscrew the impeller
screws, and take out
the impeller
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.
WARNING
14

ITEM PICTURE HOW TO DISASSEMBLE
10 Spin tub
①
Unscrew the spin tub bolts and
take
out the spin tub cover
11 Out
tub
①
Firstly make suspension rods
and the outer tub subassembly
separately.
（Remember the rods
installing order.
）
②
Take out the out tub
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.
WARNING
15

ITEM PICTURE HOW TO DISASSEMBLE
12 Parts
attached
on the out tub
①
Remove the bracket screws,
and take out bracket.
②
Remove the motor screws, and
take out motor.
③
Remove the motor clutch
assembly screws, and take
out motor clutch subassembly.
④
Firstly make retractor and the
clutch body subassembly
separately, remove retractor
screws, and take out retractor
13 Base plate
①
Remove the base plate screws,
and take out the base plate.
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.
WARNING
16

4 ERORR CODES AND EXPLANATIONS
17
Display
Cause
Check Method
E1
Alarm for abnormal water
intaking
.
Check the water tap is opened or
not.
E2
Alarm for water drain has
not finished.
Check the water level sensor
and
drain pump.
E3
Alarm for lid not closed
before spin.
Closed the lid.
E4
Alarm for washing stay at
one side.
Manually balance clothes in the
barrel by hands.
CL
Child
-Lock Alarm if the lid
open.
Power off 5 seconds and restart.
F0-F8
Any other abnormal.
1.Power off 5 seconds and restart.
2.Submit repair.

18
5 TROUBLESHOOTING
BEFORE SVC CHECKING
Before servicing ask the customer what the trouble is.
Check the work status of the problem.
Check the adjustments. (Power supply, water supply Installation
etc.
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Check other related parts when do the service and repair.
After servicing, operate the appliance to see whether it works OK
or NOT.

19
5 TROUBLESHOOTING
Failure
Inspection Items
No water
flows in
(1) If the power is off or the fuse is burned out.
(2) If the water supply is cut off or the water pressure
is too low.
(3) If the inlet hose is properly connected and the
water tap is opened.
(4) If the filtering screen of inlet valve is blocked by dirt.
(5) If the coil of inlet valve is damaged. (The slight
electromagnetic sound is normal phenomenon when
the inlet valve is switched on)
(6) If the "Start / Pause" button is pressed after the
power switch is pressed.
No washing
(1) If the power is off or the fuse is burned out.
(2) If the power supply voltage is too low.
(3) If the water amount reaches to the required water
level. (The washer will not work if the water amount
does not reach the required water level)
(4) If it is set to "Delay" washing mode. (It will only
start to work until the reservation time reached)
Abnormal
draining
(1) If the water drain hose is placed very high.
(2) If the end of water drain hose is sealed in pond.
(3) If the internal rubber ring of drain valve is blocked
by dirt.
Abnormal spin
(1) If the door lid is closed.
(2) If all clothing piled largely at one side of barrel or
the clothing is excessively placed.
(3) If the washer is not placed in stable condition or it
is placed in inclination state. (The ground is not flat).
(4) If the motor belt is loosened.

6 HOW TO CHECK THE ELECTRIC PARTS
20
Part. Circuit Diagram/Principle Where, what & how to check?
Motor&
Filter
The assembly of electric
capacitor it is mainly used to
start motor and control the
motor rotation direction.
And
different capacitance should
suit for different motor, or the
motor would not work
properly
Check resistance of the motor.
Check capacitance of the capacitor.
Yellow
Blue
Light
blue
Blue
Yellow
Test point
Normal value
Yellow
-
Blue
Indicating needle rises
and immediately
indicates ∞.
The needle
is stopped after it is
raised.
Means
Lack of capacitance of the
capacitor
.
The
needle doesn’t move Means
Capacitor is fully discharged.
Test point
Normal value
Yellow
—Light
blue
2.5
~4.5Ω
Blue
—Light blue
2.5
~4.5Ω.
Before repairing, use multimeter to judge circuit stand of fail .