Boiler shows E270, often associated with sensor calibration or configuration issues

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

Incorrect PCB configuration for Baxi model, Faulty temperature sensor readings, Firmware or parameter error, PCB replacement not correctly commissioned

How to Fix / Troubleshooting

Safety first: Configuration parameters affect safety; do not alter installer settings without competence.

User checks:

Power cycle the boiler to clear transient errors.
Do not attempt to enter installer menus unless you are qualified.

Professional actions:

A Baxi-trained engineer should verify installer parameters, sensor readings, and reconfigure or replace the PCB as required.

Repair Difficulty

Hard 4/5

Required Part

Main PCB (Control Board)

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