BoilerFaultCodesBaxi 6 red flashes Fault Code
Also written as 6REDFLASHES — same fault.
The Baxi 6 red flashes fault code means: your boiler has detected an internal communication or unexpected component fault and has stopped working as a safety precaution.. It appears on 20 Baxi models in our database.
Technical description: Miscellaneous error.
What causes the Baxi 6 red flashes fault?
This fault occurs when the boiler's internal computer is unable to communicate with its electrical components or receives an unexpected signal that doesn't match normal operation. It is often caused by a malfunctioning main circuit board or a loose connection in the internal wiring harness that prevents instructions from being sent correctly. In some cases, a failing gas valve can also trigger this 'miscellaneous' error by sending unrecognised feedback to the control system.
DIY fix possible
Turn the selector switch to the 'Reset' position and hold for 5 seconds.Release the switch and wait for the boiler to attempt to restart.Ensure your gas supply is active and your credit meter (if applicable) has funds.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like 6 red flashes: no call-out fees, no surprise bills.
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Baxi models that show the 6 red flashes fault code
Click a model for the full fault code list and model-specific repair notes.
- 100/2 HE Plus Repair: £180-450
- Bermuda Repair: £180-450
- EcoBlue Repair: £100-£350
- EcoBlue Advance Heat Repair: £100-£350
- EcoBlue Heat Repair: £100-£350
- EcoBlue Plus Combi Repair: £100-£350
- EcoBlue System Repair: £100-£350
- EP Repair: £100-280
- Netaheat Repair: £100-350
- Performa Repair: £100-280
- Profile Repair: £120-280
- Profile Prima Repair: £120-280
- Statesman Repair: £150-£400
- Suprima 100 Repair: £180-450
- Suprima 30 Repair: £180-350
- Suprima 40 Repair: £180-450
- Suprima 50 Repair: £180-350
- Suprima 60 Repair: £180-350
- Suprima 70 Repair: £180-450
- Suprima 80 Repair: £180-350
Source
Baxi 6 red flashes fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026