H1
Simzlife
Upper Zone Sensor Short Circuit (High Temperature Indication)
H1 code and temperature display shows unusually high readings even when interior feels cool
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted upper zone NTC sensor, Moisture inside sensor connector, Damaged sensor cable insulation
How to Fix / Troubleshooting
Safety: Disconnect power before handling sensors or wiring.
Steps:
- Dry interior: If there has been a spill inside the cooler, wipe all surfaces dry and allow the cabinet to air out with the door open for at least 1 hour.
- Access sensor: Remove upper shelves and the rear liner panel to reach the upper zone sensor. Inspect the sensor and connector for moisture or corrosion.
- Clean connector: If moisture is present, gently dry the connector and surrounding area. Do not use aggressive solvents; a small amount of isopropyl alcohol on a cotton swab is acceptable.
- Replace sensor: If the sensor cable is nicked or the sensor body is cracked, replace the upper zone NTC sensor.
- Reset: After reassembly, unplug the unit for a few minutes, then restore power and verify that the H1 code clears and temperatures read normally.
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Repair Difficulty
Medium
3/5
Required Part
Upper Zone NTC Temperature Sensor
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