UK Appliance Repair Questions? Ask a Technician for Answers ASAP
E21 is and indication that the appliance is unable to pump the water out of the tub assembly, this may be due to -
a. A blocked pump filter
b. A faulty drain pum
c. Blocked drain pipe
d. Faulty main control board.
Check the first three and then come back to me, if you need further help to carry these out come back to me. - Ian