E430 Low
Your boiler has detected a sudden drop or change in water pressure and has temporarily paused to re-check the system levels.
Technical description: Water pressure temporary test.
Typical repair cost: £0-120 (including labour)
DIY fix possible
Check the pressure gauge on the front of the boilerIf the pressure is below 1 bar, use the filling loop handles underneath the boiler to top it up to 1.5 barTurn the boiler off and back on at the power switch to reset the fault
Protect yourself from future repair bills
A boiler cover plan would cover faults like E430 — no call-out fees, no surprises.
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Parts commonly replaced
- None (usually just a pressure adjustment)
- Filling loop
- Water pressure sensor
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