E168 High
Your boiler has detected an internal electrical error that is preventing it from running safely, and it usually means the main control board is confused or failing.
Technical description: Printed circuit board (PCB) lockout
Typical repair cost: £280-450 (including labour)
DIY fix possible
Turn the boiler off at the main electrical switchWait 30 seconds before switching it back onPress and hold the 'Reset' button for five seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like E168 — no call-out fees, no surprises.
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Parts commonly replaced
- Main Printed Circuit Board (PCB)
- External Pump
- Electrical Harness
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