Wsrwick xl E89H error on hot water and heati

Good morning. 

I have this error  message  on hit water and heating.  I have had this issue before but strangle  after driving it corrects itself.
.any ideas. 

Cheers

Are you shutting down the heating completely before unplugging electric? If not you will get error messages.

Thanks yes I am...... not on hook up. It has happened before and after a good give it was back on possibly a loose connection  or dust in motor.???
Cheers

Hi all.

Found the issue sticky  fan on the boiler gave it a hard tap to remove dust and blew it out with compressed  air and gave it a hoover.  All working now.

Must remember that one - Thanks

The fan is very tempermental on these tight tolarances and can get stuck with dust from the carbon brushes it would be a first check if you get the E89H error.

Had this issue myself recently and upon checking I found the grille at the front of the fan assembly where air is drawn in virtually clogged with dust, dog hair and general debris. Once I’d cleared this with a flexible vaccum hose, given the fan housing a tap or two with a toffeee hammer the fan sprang into life. As well as the carbon build up on the fan’s bearing I imagine a lot of dust is drawn into the fan contributing to the fan’s “stickiness”.  I’d urge everyone to make cleaning of the ducting on the fan housing a part of their periodic maintenance routine to avoid the dreaded E89H error code.