Samsung RB31FEJNB Series Service Manual page 64

4. TROUBLESHOOTING
5) When the Cool Select Zone sensor is defective (CSZ models only)
ERROR CODE
DATA1. Temp Table
** Sensor Resistance Reading Location **
CSZ : Between CN30 #2 and #7
** 0Ω : Short / ∞Ω : Open
Refer to Circuit Diagram
Sensor MICOM/Connector #
Between Connector CN30"-
F DEF
"2"(BLK) and CN30-"7"(GRY)
Voltage : Between 4.6V ~ 0.6V
Voltage at IC10 MICOM #
26 is the same as the value
between CN30-"2"(BLK) and
CN30-"7"(GRY).
Start
MAIN PCB Connector
CN30 is inserted properly?
Yes
Cool Select Zone
Sensor is normal?
Yes
Voltage between
MAIN PCB Connector CN30- "2"(BLK)
and "7"(GRY)
Yes
Input Voltage at IC10
MICOM Pin #26 is normal?
Yes
PCB and Temp Sensor are normal.
Check the connector contact.
64
No
Connector contact defect /
Reconnect
No
Replace Temp Sensor
No NO (0.6V > Value or Value > 4.6V)
Check the wire connection
No
Check Soldering Defect & Short