E3 error on a Baumatic DBW45.1 ?

Manual available here:

http://service.baumatic.co.uk/manuals/bdwi440-201112.pdf

Fault codes listed here:

http://www.ukwhitegoods.co.uk/help/fault-codes/dishwasher-fault-codes/3305-baumatic-bdw-dishwasher-fault-codes

E3

Dishwasher has detected that water has not been heated in allotted time

Check heating element
Check operation of thermostats
Check wiring
Water heating element defective
Check electronic controller

All reasonably easy for someone COMPETENT to do.

XXX
December 2016