Smell gas? Leave the property and call the National Gas Emergency line on 0800 111 999
BoilerCodes
F0
Worcester Bosch fault code

Worcester Bosch F0: internal error

Engineer only

Worcester Bosch describes F0 on Greenstar CDi Classic boilers as: internal error.

What you can safely do

There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.

Call a Gas Safe engineer if

  • Book a Gas Safe registered engineer.
Find a Gas Safe engineer near you Opens the official Gas Safe Register search.

Applies to: Greenstar CDi Classic. Codes can differ between models, so check your manual.

What F0 means on each Worcester Bosch model

From Worcester Bosch's own fault tables. Your model name is usually on the front of the boiler or in the user manual.

ModelMeaning
Greenstar CDi ClassicInternal error

Common questions about Worcester Bosch F0

Can I fix Worcester Bosch F0 myself?

No. It needs a Gas Safe registered engineer to diagnose. Tell them the exact code and your boiler's model name.

Nearby Worcester Bosch codes

See all 28 Worcester Bosch codes

Sources