H2
Simzlife Lower Zone Sensor Short Circuit (High Temperature Indication)

H2 code and lower zone temperature display is abnormally high or fluctuates rapidly

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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 lower zone NTC sensor, Sensor wires pinched against metal panel, Condensation inside sensor housing

How to Fix / Troubleshooting

Safety: Unplug the cooler before removing panels.

Steps:

  • Inspect for pinched wires: Remove lower shelves and interior panel. Look for sensor wires trapped between panels or rubbing against sharp metal edges. Free and protect them with tape or loom.
  • Check for moisture: If condensation is present around the sensor, dry thoroughly and improve airflow by not blocking vents with bottles.
  • Replace sensor if needed: If the H2 code returns after drying and repositioning, replace the lower zone NTC sensor.
  • Reassemble and test: Refit panels, restore power, and monitor the temperature reading for stability.
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Repair Difficulty

Medium 3/5

Required Part

Lower Zone NTC Temperature Sensor
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