drdel
Tour Rookie
If it's any of the above then 90% heat pump. I've changed so many over the last few years. Having a heater that basically resembles a bit of tracking might have something to do with it!
The only consolation is that the pumps have come down in price over the years, somewhere around the £60 mark now.
Thanks guys. Yup 'tis a Bosch error code E09 - I'm thinking you're probably right and its most likely the pump heater assembly. I need to drag it out of the recess and try and find the serial number. Any tricks or unusual issues to be aware off?