Midea 22031040001001, Service Manual

Page: 34 / 49

Service Manual_2018-V1.0
34
9.5 Fault code and solutions
Fault code Fault content
Code
visible
Steps for maintenance methods
E1
Temperature
sensor fault in
refrigerating
chamber
Yes
Step 1: Check whether the terminal CN1 is well stuck,
pull out the terminal and re-stick it in place
Step 2: Check to see if there’re foreign matters on the
terminal. Pull out the refrigerating sensor according to
the method in described in Article 8.4 and then inspect
the sensor against the resistance value table in 10.6.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E2
Temperature
sensor fault in
freezing
chamber
Yes
Step 1: Check whether the terminal CN1 is well stuck,
pull out the terminal and re-stick it in place
Step 2: Check to see if therere foreign matters on the
terminal. Pull out the defrost sensor in freezing
chamber according to the method in described in
Article 8.5 and then inspect the sensor against the
resistance value table in 10.6.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E5
Defrost sensor
fault in freezing
chamber
Yes
Step 1: Check whether the terminal CN1 is well stuck,
pull out the terminal and re-stick it in place
Step 2: Check to see if therere foreign matters on the
terminal. Pull out the defrost sensor in freezing
chamber according to the method in described in
Article 8.6 and then inspect the sensor against the
resistance value table in 10.6.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E6
Communication
fault
Yes
Step 1: Check whether the terminal CN9 of the main
control board is well stuck, pull out the terminal and
re-stick it in place, and check if there is any foreign
matter on the terminal.
Step 2: Replace main control board.
Step 3: Replace display control board.
Step 4: Check whether the signal cables of the main
display board are connected.
E7
Ambient
temperature
sensor fault
Yes
Step 1: Check whether the terminal CN2 of main
control board is well stuck, pull out the terminal and
re-stick it in place and check if there is any foreign
matter on the terminal
Step 2: Check whether the sensor wiring harness are
connected.
Step 3: Replace main control board.
Step 4: Remove the temperature and humidity sensor
at the hinge, and replace the temperature and humidity
sensor.
EH
Moisture
sensor error
Yes
Step 1: Check whether the terminal CN2 of main
control board is well stuck, pull out the terminal and
re-stick it in place and check if there is any foreign
matter on the terminal
Step 2: Check whether the sensor wiring harness are
connected.
Step 3: Replace main control board.
Step 4: Remove the temperature and humidity sensor
at the hinge, and replace the temperature and humidity