Hi, welcome to Just answer
Please tell me its complete model number
and how old is it ?
HBBN730520B year I think is 04
No is HBN730520B
and this error appeared after self cleaning ?
No, when I went to turn it to self clean
oven itself working ok
ok and it is heating fine as well ?
Fan is working
Haven't tried grill
have you tried to unplug it and plug it back after 3 minutes ?
please unplug it
after you plug it back and the error returns check the door lock mechanism
Er6 means faulty door lock
if the error appears again you will have to replace the door lock mechanism
let me know how it goes
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Thank you Kevin the oven now does not show er6 cut you off because I turned the wrong switch