: An "E03" error appears, indicating an issue with the air pressure switch or flue. The Reset Ritual : To clear a minor fault, the user performs a
Adjusts tap water temperature (typically 35∘C35 raised to the composed with power C 60∘C60 raised to the composed with power C
Plug the boiler into a grounded electrical outlet (use of a voltage regulator is highly recommended). Filling the System
| Interval | Action | |----------|--------| | Each use | Check oil level, check air filter, inspect for fuel leaks | | 25 hours | Clean air filter (foam) | | 100 hours | Change engine oil, clean spark plug, check valve clearance | | 200 hours | Replace spark plug, clean fuel strainer, inspect Fi injector | | 500 hours | Replace air filter, check fuel pump (electric), inspect ECU connections | Lambert Lx 24 Fi Manual English
If your amplifier supports it, or if you have two amplifiers:
The hot water temperature sensor is faulty. Taps may deliver cold or unstable water temperatures. Requires replacement. Low Water Pressure
(Note: Specifications may vary slightly depending on the specific production year/version). : An "E03" error appears, indicating an issue
: Can occur if there is a gas supply issue or flame failure.
To keep the system running efficiently, the water pressure inside the heating loop must be monitored via the analog pressure gauge located on the lower part of the boiler interface.
The LX 24 Fi is a convectional boiler designed to provide both central heating and domestic hot water (DHW). It is particularly well-suited for standard 3–4 bedroom family homes or apartments with up to 15 radiators. Taps may deliver cold or unstable water temperatures
Although this article compiles key operational information, it does not replace the official user manual. Here are the best ways to locate it:
It includes clear visual indicators for "Power On," "Burner On," and "Flame Failure" (fault warning) to help users monitor operation at a glance.
, then press Reset. Check if your radiator valves are open and ensure the pump is spinning. Air trapped in the heat exchanger can also trigger this. E03: Flue Gas Discharge / Air Pressure Switch Failure
The Lambert Lx 24 Fi Manual English explicitly states that user maintenance is limited to resetting the control panel, repressurising the water system, and bleeding radiators. Any internal repairs require a professional.