Bosch WFB1605 speed control

[philpearson]

I have a Bosch WFB1605 with ineffective speed control. The drum runs at full speed in alternate directions during the wash part of the cycle.

I haven’t yet investigated the problem further.

What should I be looking for to fix the problem?

[gegsy]

Re: Bosch WFB1605 speed control

Hi
Its either the tacho on the motor or the speed control module itself at fault.
May I suggest an engineer from the link below.

Greg

[gegsy]

Re: Bosch WFB1605 speed control

Just to add, you could have earth leakage from a component aswell causing fault.

Greg

[philpearson]

Re: Bosch WFB1605 speed control

Thanks.

I’ll try to check the tacho output when I get chance to get the thing apart; what voltage should I expect at full speed?

How feasible is it to replace the speed module or tacho?

[gegsy]

Re: Bosch WFB1605 speed control

Hi
We don’t recommend “Live” testing of any appliance. Please unplug appliance and cold test components with a multimeter.If you have any doubts please use the link below for an engineer.

Greg

[philpearson]

Re: Bosch WFB1605 speed control

I checked the tacho and I think it’s probably OK; I can get about 3V a.c. when spinning the drum by hand.

Assuming the fault is with the speed control module where can I get one? It’s a COPRECI BYR891-3

Thanks in advance.

[gegsy]

Re: Bosch WFB1605 speed control

Hi phil
If you can supply the full model number (around door or on the rear), we will be able to go firther for you.

Greg

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