Error Code 1
Freezer temperature sensor is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 1
What This Means
Freezer sensor connector disconnected; Freezer sensor defective or open circuit; Wiring harness damage between sensor and Main PCB CN30; Main PCB defect
What actually causes this:
Sensor wire came loose from the connector or the sensor failed
First Thing to Check
Unplug refrigerator, wait 30 seconds, and plug back in to reset — if error persists, call technician
Parts Involved
How to Fix
- 1
1. Check voltage between Main PCB CN30 pins 1 and 3 — should be within 4.5V to 1.0V range
- 2
2. Reconnect sensor connector if loose
- 3
3. Measure sensor resistance with power off
- 4
4. Check wiring harness for damage or moisture
- 5
5. If voltage readings are correct, replace Main PCB
This Error Applies To
Samsung RF22K9581 Series Refrigerators (2016) (2016–present)
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