Bosch tumble dryer WTA79200GB/03

This topic has 4 replies, 4 voices, and was last updated 1 year, 2 months ago by dunston.

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January 8, 2025 at 7:02 pm #103164

dunston
Participant

The dryer has a E90 error. The drum doesn’t turn but it is heating, a relay is clicking then E90 in display.
Anyone help with this fault?

January 8, 2025 at 9:29 pm #492026

electrofix
Moderator

well google search brings up communication

check the connection between the 2 boards

Dave

January 9, 2025 at 8:48 pm #492027

kaibart
Moderator

It’s the main power module fault a relay on it is faulty change loads of them

January 9, 2025 at 10:42 pm #492028

electrofix
Moderator

next time you do one post pics in known pcb faults please

Dave

February 17, 2025 at 11:28 pm #492029

Micky 32
Participant

I came across one 6 months ago. I reflowed the relay solder joints. 6 months on still works ok.
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