Boiler won't fire up: common causes and what to do in Terrassa
Resumen rápido
Usually low pressure or a reset error code.
¿Qué está pasando?
A boiler needs gas, power and pressure.
Causas más probables
Low pressure
altaGauge <1 bar: fill to 1.2 bar.
Gas off or shut valve
mediaCheck if the stove has gas.
RCD tripped
mediaNo power = no ignition.
Flue blocked
bajaNest or leaves in the flue.
Faulty sensor or electrode
mediaCodes E01/E02: technician.
Pasos de diagnóstico
- 1
Check the pressure gauge
Fill to 1.2 bar and close.
- 2
Check error code and reset
Note the code and press reset 2–3s.
- 3
Check gas and power
Verify gas and breaker panel.
⚠ Parada de seguridad: If you smell gas: shut valve, ventilate, call 112.
Cuándo llamar a un profesional
If it persists, call official service.
Coste orientativo en Terrassa
70–320 €
Visit + diagnosis + small part.
Contexto local · Terrassa
In Terrassa, sealed boilers are mandatory since 2007.
Terrassa has a strong industrial identity: 19th-century textile factories have been converted into lofts and offices in Can Boada and l'Antic Poble de Sant Pere. There we work with 5 m ceilings, wrought-iron beams and original slabs that can't take big point loads — any mezzanine hangs off new steelwork. The rest of the city is 1970s–80s mid-rise with the usual insulation issues. At ~280 m altitude winters are cold and heating demand — heat pumps, biomass, boilers — is high. C-58 access dictates booking order: first slots local, second slots Barcelona.
- Comarca: Vallès Occidental
- Población: 223.627 hab.
- Parque de vivienda predominante: piso-moderno
- Año medio de construcción: 1972
- Códigos postales: 08221, 08222, 08223, 08224, 08225, 08226, 08227, 08228
Antigua capital textil con barrios densos (Ca n’Anglada, Sant Pere Nord) y zonas residenciales en Can Boada y Les Fonts.
Preguntas frecuentes
Why does it lose pressure on its own?
Valve, leak or expansion vessel.
How often service it?
Annual service, 4-year inspection.
¿Prefieres que vayamos nosotros?
Diagnóstico y presupuesto en Terrassa normalmente el mismo día.
Pedir presupuesto gratis