Kospel
Internal Protection Trip Without Displayed Code
Boiler starts but shuts down after a few seconds without showing an error code
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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
Intermittent flow sensor signal, Marginal overheat thermostat, Loose sensor connections, Internal self-diagnostics stopping operation
How to Fix / Troubleshooting
Safety first: Monitor the boiler closely; repeated short starts can stress components.
Steps to check:
- Check flow and pressure: Ensure system pressure is correct and that all valves are open.
- Inspect sensors: Verify that all NTC sensors and the flow switch are securely connected and free of corrosion.
- Clean strainers: Remove any debris from system strainers to ensure stable flow.
- Observe pattern: Note whether shutdown occurs at the same point each time; this information will help a technician diagnose the issue.
When to call a technician: Intermittent faults without clear codes often require professional diagnostic tools and experience.
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Repair Difficulty
Medium
3/5
Required Part
Flow Switch / NTC Sensors
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