R&D COMBI Series, Service Manual

Page: 42 / 57

42
诊 断
时 会
会 报
出
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 10.8.
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 there’re foreign matters on the
terminal. Pull out the defrost sensor in freezing chamber
according to the method in described in Article 8.4 and
then inspect the sensor against the resistance value table
in 10.8.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E4
Defrost sensor fault
in
refrigerating
chamber
Yes
Step 1: Check whether the terminal CN3 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 defrost sensor in freezing chamber
according to the method in described in Article 8.4 and
then inspect the sensor against the resistance value table
in 10.8.
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 CN3 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 defrost sensor in freezing chamber
according to the method in described in Article 8.4 and
then inspect the sensor against the resistance value table
in 10.8.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E6 Communication fault Yes
Step 1: Check whether the terminal CN8 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