6 Green Flashes High
Your boiler is experiencing a communication error or internal electronic fault that is preventing it from running properly.
Technical description: Miscellaneous error
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Locate the selector switch on the front of the boiler.Turn the switch to the 'Reset' position and hold it for five seconds.Turn the switch back to the 'On' position and wait for the boiler to restart.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 6 Green Flashes — no call-out fees, no surprises.
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Parts commonly replaced
- Printed Circuit Board (PCB)
- Wiring harness
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