Medium
50 on Ferroli DOMINAplus F28D

Your boiler has detected an issue with the sensor that monitors the water temperature, meaning it cannot accurately gauge how hot the system is.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Ø 50

From this model's manual
Verified against the Ferroli/Ferroli Domina 80e installation & service manual, page 27.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

05View →F05View →

All 24 fault codes on the DOMINAplus F28D

Seeing a different code? Every code this model can display, in one place.

4 (Flashing Light)4 (Permanent Light)5 (Flashing Light)5 (Permanent Light)4547E03E05E06Heating demand light ONInsufficient pressureLED 4LED 4 (Flashing light)LED 4 (Permanent light)LED 5LED 5 (Flashing light)LED 5 (Permanent light)LED1LED2Low water pressure light ONRed LED Out (Lockout)Red light (Egg timer symbol)Tap symbol light ON

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