Low
F7 328 on Worcester Bosch 35 RSF

Your boiler has experienced a temporary interruption to its electrical supply and needs to be reset to resume normal operation.

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.

Technical description

A brief power failure has occurred

DIY fix possible

Locate the reset button on the boiler control panelPress and hold the reset button for approximately five secondsWait for the boiler to restart and check if the display returns to normal

Find a Gas Safe engineer
Search the official register →

Related fault codes

F0View →E9View →

Related guides you might find useful

Boiler keeps cutting out

Lockout fault with a reset-needed pattern.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →