BoilerFaultCodes é1 High
Your boiler has switched itself off because it has detected that the water inside is getting too hot, likely due to low water pressure or trapped air in your radiators.
Call an engineer soon
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flow temperature is higher than the set maximum temperature. Insufficient water. No through flow. Too much air in the system. Deviation in the flow or return temperature sensor.
Typical repair cost £120-250 (including labour)
DIY fix possible
Check your boiler's pressure gauge and top it up to 1.5 bar if it is below 1 barBleed all radiators in your home to release any trapped airEnsure all radiator valves are fully open to allow water to flow freely
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like é1 — no call-out fees, no surprises.
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Remeha Avanta 18V is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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