Termet Wind-Induced Flue Disturbance / Flame Instability

Boiler locks out occasionally without a clear error code, often during windy conditions, then restarts after reset.

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.

Possible Causes

Flue terminal installed in high wind exposure without proper shielding, Incorrect flue length or orientation for Termet boiler, Negative pressure in boiler room due to extractor fans, Marginal combustion settings

How to Fix / Troubleshooting

User checks:

Note whether lockouts coincide with strong winds or use of powerful extractor fans.
Ensure that ventilation openings are not blocked.

Technician checks:

Inspect the flue terminal position and compliance with Termet installation instructions.
Adjust flue configuration or add wind protection accessories if approved.
Check combustion settings and flame stability with an analyser.
Assess room air balance and interaction with mechanical ventilation.

Flue and combustion adjustments must be carried out by qualified personnel.

Repair Difficulty

Hard 4/5

Required Part

Flue Terminal / Flue Kit Components

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