H1
Bosch
High Temperature Protection / Sensor Over-Range
Display shows H1 and cooker stops or refuses to start high-heat programs.
Advertisements
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.
Advertisements
Possible Causes
Blocked ventilation, Excessive ambient temperature, Faulty NTC sensor reading too high, Control board misreading sensor
How to Fix / Troubleshooting
Safety first: Allow the cooker to cool and unplug it.
- Improve ventilation: Move the cooker to an open area away from walls and cabinets. Ensure vents are not blocked.
- Clean base and vents: Remove dust and grease from ventilation slots and the base using a soft brush or vacuum.
- Avoid repeated high-heat cycles: Allow a few minutes of cooling between back-to-back frying or sauté cycles.
- Advanced diagnosis: If H1 appears even when the cooker is cold, the NTC sensor or control board is likely faulty and should be tested and replaced as needed.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements