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BoilerCodes
F0
Ideal fault code

Ideal F0: no water flow thermistor

Engineer only

Ideal describes F0 on Ideal boilers (Ideal's general fault code guide) boilers as: no water flow thermistor.

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: Ideal boilers (Ideal's general fault code guide). Codes can differ between models, so check your manual.

What F0 means on each Ideal model

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

ModelMeaning
Ideal boilers (Ideal's general fault code guide)No water flow thermistor

Common questions about Ideal F0

Can I fix Ideal F0 myself?

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

Nearby Ideal codes

See all 19 Ideal codes

Sources