Error Code 09
Defrost heater temperature sensing not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: Left - ③ LED ON
What This Means
Sensor connector missing or loose; Contact failure at pins; Wire cut or damaged; Short circuit at sensor
What actually causes this:
Freezer defrost sensor corrodes from moisture or connector vibrates loose
First Thing to Check
Inspect CN30 connector and defrost sensor wiring for corrosion
Parts Involved
How to Fix
- 1
Check voltage between MAIN PCB CN30 #4 and #7
- 2
Voltage should be within range 4.5V ~ 1.0V
- 3
Inspect connector and wiring for damage
Other Error Codes for RS25J500DSG
Damper heater not responding or circuit open
Compressor fails to operate or protection activated
Ice maker sensor malfunction or connection issue
Ice maker ejection or level detection malfunction
Freezer evaporator fan not operating properly
Refrigerator compartment temperature measurement failure
Freezer temperature sensor not responding
Freezer defrost cycle fails or takes too long