LG GR-642APA Service Manual page 21

7-1-10 ERROR DIAGNOSTIC MODE
1. The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while
operating the product.
2. Even if the function control button is pushed when an error occurs, the function will not be performed. However, the
recognition tone (beep~) sounds.
3. When the error is cleared while the error code is displayed due to a fault, the appliance returns to the normal condition
(Reset).
4. The error code is displayed by the refrigerator temp indication LED on the display of the refrigerator while the remaining
LEDs are off.
NO Error
1 Faulty refrigerator
(R) sensor
Faulty defrosting
2
sensor
Faulty Room
temperature sensor
3
(in the main PCB)
4 Defrosting failure
Error Code
Display
Cut or short-circuited wire of
r
refrigerator sensor
Cut or short-circuited wire of
d
defrosting sensor
when checking Cut or short-circuited wire of
LED, the error intake air temperature sensor
code display all off.
Cut or disconnected wire of
defrosting heater or temperature
H
fuse(indicated at least 4 hours
later after the error occurs)
Cause
Comp
15 min ON/
15 min OFF
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Error Code
Display
State of Operation with Error
Cooling fan Defrosting heater
standard
RPM
standard
No defrosting
RPM
standard
RPM
standard
RPM