Siemens SE20790GB/04

[ChrisR]

Hi guys.

Sometimes this dishwasher heats correctly then appears to only slightly heat(users term).
It sticks on one minute and also occasionaly heats the prewash water on auto setting.

I`m assuming programmer unless anybody knows different.

Thanks 😀 .

Chris.

[bosch-engineer]

Re: Siemens SE20790GB/04

Its quite normal for this machine to use the same water for the main wash from the pre-wash cycle. If the turbidity sensor senses that the pre-wash water is clear/not dirty, it will continue into the main wash without draining & refilling (to save water). It will however drain the water if the sensor senses cloudy/dirty water & refill with clean water. Leaving 1 minute in the display & sometimes not heating usually indicates that the left hand side water chamber & pressure switch assembly & or the sump hose is blocked with deposits. This causes a lack of water entering the sump causing cavitation in the circulation pump. This then stops the pressure switch on the heater activating due to a lack of wash pressure causing the intermittant heating problem. I would’nt invest in new modules until you are happy that the machine is filling correctly.

[superfix]

Re: Siemens SE20790GB/04

Clean the sump hose and pressure chamber.

[ChrisR]

Re: Siemens SE20790GB/04

Thanks guys for your input. 😀

[Author]

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