Samsung RFG298AA series Service Manual page 75

TROUBLESHOOTING
10) If Pantry Room Damper Heater has trouble
ERROR Code
Measure the resistance
between ①-② after
CN91 connector open 145ohm ± 7%
Initial
MICOM
power On
#42
3.5V ~
condition
4.8V
※ It could changed HEATER capacity by operation.
☞ Checking method of Pantry Room Damper
resistance CN91#1(Black) ↔ #2(Brown)
** ∞Ω: Open(wire disconnection, heater
disconnection) trouble / 0Ω: Short trouble
Damper Damper
heater off heater On
3.5V ~
0V
4.8V
Start Start
NO
Is Damper Heater
normal?(about145ohm)
YES YES
NO
Is MAIN PCB connector
(CN91) inserted correctly?
YES YES
NO
Is the input voltage of
IC02 MICOM #42 normal?
YES YES
Normal(recheck)
74
Replace Damper
Bad contact of connector/ insert correctly
1) Recheck the wire
2) Replace PCB MAIN