E1-69 / E1-70 High
Your boiler’s internal computer has encountered a software error while checking its settings, which has caused the system to stop working for safety.
Technical description: Parameter CRC fault – try resetting the boiler
Typical repair cost: £120-450 (including labour)
DIY fix possible
Locate the power switch or fused spur for the boilerTurn the power off for 30 secondsTurn the power back on and press the 'Reset' button on the display panelMonitor the boiler to see if the error screen clears
Protect yourself from future repair bills
A boiler cover plan would cover faults like E1-69 / E1-70 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Parameter Plug
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