V-ZUG
Residual Heat Sensor / Indicator Fault
Residual heat indicator for a zone stays on even when the zone is cold, or does not light when the zone is hot.
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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
Defective temperature sensor on zone, Faulty residual heat circuit on control board, Wiring fault between sensor and indicator, Software miscalibration
How to Fix / Troubleshooting
Safety note: Always treat a zone as potentially hot if the indicator is on or uncertain.
User checks:
- Observe whether the indicator behavior is consistent across multiple uses.
- If only one zone is affected, a local sensor fault is likely.
Technical steps:
- Access the underside and locate the residual heat sensor (often integrated with the heating element or as a separate NTC).
- Measure its resistance at room temperature and compare with specifications.
- Check wiring continuity to the control board.
- Replace the faulty temperature sensor or, if necessary, the control board.
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Repair Difficulty
Medium
3/5
Required Part
Residual Heat Temperature Sensor
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