2-16. Failure Diagnosis Function
1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product
during use of product.
2. In occurrence of failure, pressing the function adjustment button does not perform function.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of LCD, which are placed at the display part of a refrigerator. All the LCD graphics
other than a failure code are turned off.
✽ All LCDs turn off other than freezer room notch temperature display and refrigerator room notch temperature
display(failure code indication part) in case of indicating failure modes(except for Note1, Note2).
MICOM FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
Er FS
Er rS
Normal display
(Note 2)
Er dS
Er dH
Er FF
Er CF
Er CO
Normal display
(Note 1)
Normal display
(Note 2)
Normal display
(Note 2)
Normal display
(Note 2)
Failure code indication part
Freezer room
notch temperature
display
Refrigerator room
notch temperature
display
No. Item
Contents of failure
Freezing
BLDC motor
Compressor
Stepping
motor damper
Defrost
Heater
Cooling
BLDC motor
Product operation status in failure
Abnormal
freezer sensor
Abnormal refrigerator
sensor1(R1)
(Upper part in the
refrigerator
compartment)
Abnormal refrigerator
sensor2(R2)
(Upper part in the
refrigerator
compartment)
Abnormal defrost
sensor
Failed defrosting
Abnormal freezing
BLDC motor
Abnormal cooling
BLDC motor
Abnormal
communication
Abnormal
ambient sensor
Abnormal
ice-maker sensor
Abnormal
ice-maker unit
Abnormal
miracle zone sensor
Freezer sensor short circuit
Refrigerator sensor1 short circuit
Refrigerator sensor2 short circuit
Abnormal short circuit
Defrost heater, temperature fuse short
circuit, unplugged connector(indicated
4 hour later after trouble)
Motor defect, hooked of lead wire
to fan, contact of structures with
fan, short or open of lead
wire(there is no signal of BLDC
motor more than 115 seconds in
operation of fan motor)
Short or open of lead wire
connecting betwee main PCB
and display PCB, transmission tr
and receiving part
Ambient sensor short circuit
Ice-maker sensor short circuit
Faulty ice-maker unit motor or hall
ic, lead wire short circuit, faulty
motor driving circuit
Miracle zone sensor short circuit
Standard
RPM
Standard
RPM
Standard
RPM
Standard
RPM
Standard
RPM
OFF
Standard
RPM
Standard
RPM
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OFF
●●
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ON for 15minutes /
OFF for 15minutes
●●
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●●
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No defrost
●●
●●
●●
●●
●●
●●
●●
●●
●●
Full opening for
10 minutes/
Full closing for
15 minutes
●●
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: Proper operation
- 31 -
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