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Dales-Electronic
Dales-Electronic, Home Appliance Technician
Category: Appliance
Satisfied Customers: 1466
Experience:  I am a Home Appliance / Refrigeration Technician of 25yrs+ with my own business and for multi-brand national companies.
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Steam generator B35L When it is not scaled up this is a great

Customer Question

Steam generator B35L
When it is not scaled up this is a great product.
Descaling however is taking more time each time.
Now it is continually pumping and producing steam as if a valve is stuck open.
I'm tempted to take it apart and find the problem but thought I'd check with the experts first & Bosch support line is a costly queue.
Can anyone offer advice?
Tim
Submitted: 1 year ago.
Category: Appliance
Expert:  Dales-Electronic replied 1 year ago.
Hello My name is Ian ~ I am not on the site constantly so please be patient whilst waiting for responses to you queries - would you kindly let me have the full ENr for the product please.
Customer: replied 1 year ago.
THANKS IAN,
ENR is
Tds3520GB/2
Expert:  Dales-Electronic replied 1 year ago.
Copy and paste the following link in to your browser, page 1 --http://www.bosch-home.co.uk/store/spareparts/silverblack/TDS3520GB/02
diagram 0121 is where I would be looking first, its the magnetic valve assembly.
Customer: replied 1 year ago.
OK so cover off & I have found that the steam on solenoid is permanently energised.
System is stable if one contact removed.
Not sure whether the fault is in the switch on the iron handset or elsewhere.
Expert:  Dales-Electronic replied 1 year ago.
I would think it is in the handle but I will try and get a wiring diagram tomorrow to confirm this. Unfortunately Bosch don't supply much in the way of technical information cover their small appliances, they expect people to buy a new one.
Customer: replied 1 year ago.
I hate throwing serviceable kit out - even when my time is probably more valuable.
Either Bosch want us to buy new or spend hours on a chargeable help line.
If you can help me diagnose when that fault is: it will be worthwhile.
Tim
Expert:  Dales-Electronic replied 1 year ago.
Do you have a multimeter just in case we cant get hold of the wiring diagram?
Customer: replied 1 year ago.
Yes I've got a multimeter
Expert:  Dales-Electronic replied 1 year ago.
OK I still havent got a wiring diagram so lets see if we can sort it out by hand, you should have a switch wire coming down the pipe from the iron end to the main steamer area??
Customer: replied 1 year ago.
Hi Ian,
Did you get my message about wiring voltages yesterday?
Tim
Expert:  Dales-Electronic replied 1 year ago.
Not a thing Tim, what was the query?
Customer: replied 1 year ago.
Not sure what went wrong there. See below.
In the meantime I have bypassed the pcb and added a foot switch as a temp solution.
A wiring diagram would be useful.
T
Hi Ian
I've been tinkering:
Grey brown black & earth wires with the steam pipe
I dismantled the handset with some difficulties and all seems OK.
Brown live, black live grey seems to be neutral
0v between black & brown with switch open, 250v with switch closed-
But this change has no impact on the solenoid cable coming off the PCB.
Any ideas?
TimOn 29 Dec 2015 10:13, "JustAnswer" wrote:
Expert:  Dales-Electronic replied 1 year ago.
OK where do the brown and the black connect to in the generator area?