From symptom to next step
Choose your model and expand the message. See what it indicates, what it cannot diagnose and where to read more in the blog.
Vaillant
On ecoTEC pure, F.22 is a safety shutdown associated with insufficient water. It does not prove a leak: pressure measurement also needs checking.
Entiende esta advertencia →On ecoTEC pure, F.28 indicates unsuccessful ignition at startup. It does not identify a failed part or justify replacing the PCB without diagnosis.
Entiende esta advertencia →
Baxi
The Neodens Plus ECO manual identifies 118 as insufficient hydraulic pressure. Follow the manual for your version; arrange inspection if it recurs.
Entiende esta advertencia →The Neodens Plus ECO manual associates 133 with failed ignition after automatic attempts. This is not an instruction to perform five manual resets.
Entiende esta advertencia →Codes are not universal and are not a diagnosis. Check the model and its manual. Do not open the appliance or work on gas, electricity or combustion. If you smell gas, leave and contact emergency services or the gas supplier from outside.
Before changing the thermostat of the boiler, it is advisable to check more than just the number of wires or whether it has Wi-Fi. We review which technical data determine real compatibility and how to avoid losing modulation functions or hot water.
Practical guide to understanding the budget for an aerothermal installation: market reference, breakdown of technical items, sizing factors, and matrix for comparing offers without leaving out any work.
Practical guide to estimate the electricity consumption of an air conditioning unit: difference between thermal capacity and absorbed power, step-by-step calculation in kWh, and limits of the energy label.
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