R&D COMBI Series Service Manual page 42

Fault
Fault content
code
Temperature sensor
E1 fault in refrigerating
chamber
Temperature sensor
E2 fault in
chamber
Defrost sensor fault
E4 in refrigerating
chamber
Defrost sensor fault
E5
in freezing chamber
E6 Communication fault
Ambient temperature
E7
sensor fault
诊 断
时 会
会 报
出
Code visible
Yes
freezing Yes
Yes
Yes
Yes
Yes
Steps for maintenance methods
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
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
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
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
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.
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
42