Midea HS-312FWEN, Service Manual

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Service Manual_2020-V1.0
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9.5 Open door alarm
When door is open last for 120s, there will be buzzer alarm, afterwards give alarm one time per
second until the door is closed, or press any buttons on control panel can cancel this alarm.
9.6 Error code and solutions
Error code Fault Type Troubleshooting and Solutions
Gear
⑥
and Gear
⑤
together lighten
Refrigerator chamber
sensor failure (E1)
Step 1 : Check whether the connection terminals are
plugged in place and whether there are foreign matters in
them; after cleaning the terminals, plug them in again.
Step 2 : If the fault still occurs, pull out the corresponding
connection terminal on the main PCB, use a multimeter to
check the resistance value of the sensor, and confirm
whether it is normal.
Step 3 : If the resistance value is wrong, replace the
sensor.
Step 4 : If the fault still occurs, replace the main PCB.
Gear
⑥
and Gear
④
together lighten
Freezer defrost sensor
failure(E5)
Gear
⑥
and Gear
③
together lighten
Ambient temperature
sensor failure (E7)
Gear
③
and Gear
⑤
together lighten
Communication
failure
(E6)
Step 1 : Check whether the connection terminal on the
display control panel, hinge cover and main PCB are
plugged in place and whether there are foreign matters in
them; after cleaning the terminals, plug them in again.
Step 2 : If the fault still occurs, pull out all connection
terminals, use a multimeter to check the resistance value
of the wire between the display control board and the main
PCB to see if it is broken. If test value is
∞Ω
, the wire is
broken.(If the wire in the door is broken, replace the door.
Other conditions cannot be repaired.)
Step 3 : If the wire is OK, replace the display control board.
Step 4 : If the fault still occurs, replace the main PCB.
Gear
④
and Gear
⑤
together lighten
Fault of long press
button(E10)
Check whether the button lock of display control board, or
replace the display control board
9.7 Test mode
All below functions are only for diagnosis and test purpose, we advise to restart the refrigerator by power
on/off if have used these functions.
Test items Setting Method Setting result
Enter Test Mode
Keep pressing the
button A
and
button B
for 5 seconds and release
Gear
⑥⑤④③②
together lighten
, then
the refrigerator enters into test mode
After entering into test mode, if no
button is pressed within 15 seconds
then the refrigerator will exit the test
mode and return to normal operation
mode