Low
Fh on Ferroli HiTech RRT 24C

Your boiler is currently running an automatic air-clearing cycle to safely remove trapped bubbles from the system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Air venting cycle

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

DIY fix possible

Wait a few minutes for the automatic venting cycle to finish and complete on its own.Check your system water pressure gauge and top it up to about 1 to 1.5 bar if it is running low.Bleed your radiators with a radiator key to remove any trapped air if the fault persists.

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Related fault codes

F34View →F35View →

All 36 fault codes on the HiTech RRT 24C

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

A06A08A09A11A14A23-A24-F51A26A44A80A88A98A99F05F09F10F11F12F13F15 - A07F19F21F34F35F37F39F40F47F50F50 - F53F51F53F62F64F96F99

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