Daewoo FRS-U20DD. Service Manual page 57

9-3-4. Super-cooling of Vegetable Case
Refrigerator temp.
setting is "Strong" ?
R-check valve
Works OK ?
Is there any
R-sensor error code ?
Start
N
Y
Y
Y
N
N
R-sensor is OK ?
Y
57
Counsel the temperature modes.
Counsel to set the temp.
"Middle" or "Weak" mode.
Repair and/or Change
the R-check valve.
※ Refer to "Repair /Change
of Check Valve".
N
Change the R-sensor.
Check the R-sensor connection.
(Check the connector to Main PCB.)