Siemens Oven overheating HB760550B/02

[roybun]

Oven overheated badly burning food. Checked sensor (part No 00423842) which gave a reading of approx 550 Ohms. Is this likely to be the problem?

TIA

[electrofix]

siemens dont give out tech info too easily so we dont know what resistance the probe should be

if you set it at the lowest temp does it still overheat massivly

Dave

[roybun]

Dave. Thanks for the response.

‘if you set it at the lowest temp does it still overheat massivly,

Yes, it overheats massively at both normal and air setting even when set at 40 deg C.

[electrofix]

first thing i think i would check is the relays on the board. If the one that controls temperature is welded closed it will cause this fault

Dave

[roybun]

Thanks Dave

I was hoping it would be a simple fix, like a new sensor. Seeing as the oven is 15+ years old I’ll just scrap it.

[electrofix]

try one big long shot

find board and firmly tap each relay

then try it

if it works it was a stuck relay and it may happen again or it may not

Dave

[roybun]

Thanks again Dave.
I hear what you are suggesting, but we decided to cut our losses. New oven being delivered tomorrow – not Siemens!

[electrofix]

as long as its not one of the cheap makes will be ok

Dave

[roybun]

Miele – it cheap!

[roybun]

Not cheap!

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