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Hi
I have a bosch wfb 2005 gb and the door no longer locks.
So after looking and finally realizing how an interlock works I have a query.
I have 3 wires yellow and red, brown and white.
and by joining the brown and yell/red together i can get the machine to work so by default the white goes to the bi metallic switch in the lock which when heated joins the 2 together.
The white comes from the pressure switch.
so anybody tell me why i cant get the door to lock? or have a wiring diag for said model.
cheers JohnRe: Bosch door interlock prob
Does the machine actually work with the interlock in place and connected correctly ?
In theory it can’t but the plastic could be worn on the latch/lock allowing the door to opened.
Dave.
Re: Bosch door interlock prob
no it didn’t work with the lock in place . I assume it is something to do with the white wire from the pressure switch that operates the bi met switch on the lock , but without stripping the machine down in my kitchen I am not too sure.
I have tried a similar lock with similar connections inside it will work with lock in if i manually push the contacts together and will lock but it will not lock on its own.
JohnRe: Bosch door interlock prob
I’m sure you need a new interlock. just order the correct one. You’ll need to specify which GB/?? and FD number. any probs ring 01325 485939 an dwe can supply it.
Re: Bosch door interlock prob
sorted 😀
wires were wrong way works fine now.
Thanks for your help
JohnRe: Bosch door interlock prob
Irrespective of make and model, all 3 wire door interlocks have one live to it (L), one live from it (C) and a neutral return supply(N) for the bi-metal coil. But that’s the easy bit to establish, the tricky bit is that most modern Interlocks have numbered terminals that very often don’t comply to a common wiring pattern. 😕
Re: Bosch door interlock prob
Penguin45 wrote:ALWAYS make a diagram before pulling wires off………
Chris.
9 times outta 10 i do but i didnt have the exact lock for this machine so i used another style and the wires go on different.
I did have to open the casing on the locks to find out where 😀Re: Bosch door interlock prob
jwd_73 wrote:I did have to open the casing on the locks to find out where 😀
Smart thinking 😉
Re: Bosch door interlock prob
Martin stated that all 3 wire interlocks have a live wire to it , a neutral to it , and a live from it . I beg to differ . All three wir interlocks have a live feed and a neutral feed , but the c wire is connected to neutral out on some machines . The old metalflex interlocks fitted to some older machines have a cicuit diagram printed on them . This clearly shows that with the interlock operated or locked the third or C wire is connected to neutral . Your comments?
Re: Bosch door interlock prob
neptune wrote:The old metalflex interlocks fitted to some older machines have a cicuit diagram printed on them . This clearly shows that with the interlock operated or locked the third or C wire is connected to neutral . Your comments?
I think that you have been in the water to long or are suffering from the ‘bends’ here (only joking by the way 😉 ) but seriously, please elaborate on what the hell a Metaflex is? I am sure you appreciate how interlocks work and that you cannot have just one live supply and two neutrals. How will that work then?
Re: Bosch door interlock prob
Martin wrote:I am sure you appreciate how interlocks work and that you cannot have just one live supply and two neutrals. How will that work then?
Pretty straight forward Martin you simply have a live and neutral to the heater and the neutral is switched instead of the live.
Bryan
Re: Bosch door interlock prob
Bryan wrote:the neutral is switched instead of the live.
😳 Doooh! I should have figured that?…sorry 😳
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