Low Water Pressure
The most common Baxi fault code. System water pressure has dropped below 0.5 bar — the minimum required for safe operation. Note: the display shows E1 then 19 sequentially.
Step-by-Step Fix Guide
-
Step 1
Note: E119 cannot be cleared by pressing reset — you must first increase the pressure
-
Step 2
Locate the pressure gauge (usually on the front of the boiler)
-
Step 3
Find the filling loop and slowly open both valves until pressure reaches 1.0–1.5 bar
-
Step 4
Close the filling loop valves
-
Step 5
The boiler should automatically restart, or press reset
-
Step 6
If pressure drops repeatedly, check for visible leaks and call a Gas Safe engineer
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.