Home/Boiler Fault Codes/Baxi E119
BAXI FAULT CODE
Baxi E119
Low water pressure — system pressure has dropped below the safe operating threshold, typically below 0.5 bar.
WHAT E119 TYPICALLY INDICATES
Low water pressure — system pressure has dropped below the safe operating threshold, typically below 0.5 bar.
WHAT TO DO
Check the pressure gauge and top up to the range shown on the gauge (usually around 1.0–1.5 bar) using the filling loop, following the boiler manual. If pressure keeps dropping, that points to a leak elsewhere in the system, and This is not a DIY fix — it requires a Gas Safe registered engineer to diagnose and repair safely.
A NOTE ON GAS SAFE REGISTRATION
Any work on the gas side of a boiler in the UK legally requires a Gas Safe registered engineer, it isn't optional. Our engineers are fully Gas Safe registered, and you're always welcome to ask to see ID on the day. This page is general information about what a fault code typically indicates; it is not a substitute for an engineer diagnosing your specific boiler.
Seeing Baxi E119 on your boiler?
Tell us the code and your postcode. A fully Gas Safe registered engineer will diagnose the actual cause before quoting a fix.
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