Bosch SMV43L10GB/46, Error E02.

[mayub]

I am new in the forum and seek advice to resolve this annoying issue in operation of dishwasher. This machine has started with water leak in bottom area, I think the error code was E25 initially, I opened machine from front and dry water by removal of the poly staring mechanism reside under microswitch and assembled back to get rid of error. Machine work fine for few days but same error creeped in few times on regular basis that indicates that may be something electronically on the boundary line on controller board.
Following Activities done so far.
Checked the drain hose, find no blockage under sink side.
Checked water inlet filter no blockage
There was no kink found in the drain pipe.
Bought leakage repair kit from Bosch and installed.
Change water drain pump.
Filter and surrounding areas are clean.

Sent Power Board for repair, they change couple of relays and a cap on the board.
After all above activities, machine start normally but stop after few minutes due to E02 error , if you open door seem water stand on the bottom of machine however power switch on the panel press and release, error disappear and by press and hold start button reset cycle of machine and that drain water without any problem so that indicate new pump work okay during rest cycle. However if we run test cycle again it happened same means does not drain water and not complete with rest of sequence of wash.
Can someone help to point out to resolve this annoying issue.

[electrofix]

from the google search this problem can be caused by a few things

panel fault I know you have had it looked at but it does npt mean it still has a fault

Temperature sensor faults. these sensors are part of the wash motor

Dave

[mayub]

Thanks Dave for your input, However I will say that at one stage dishwasher completed a test wash cycle after some changes but water was not hot and plates were cold and drying sequence was not completed (I guess). I think it might be temperature sensor fault. I have check the continuity between two pins of motor at spade connector was fine. How I can check temperature sensor to rule out wash motor is the culprit.

[electrofix]

the sensor are the small plug on the side of the motor next to the heater connection
be carfull that little plug can be fun to get out without breaking

there are 3 connections and 2 sensors. luckily they are the same so the measurements of each should be roughly identical

cant remember which is the common lead but think it may be the middle one

Dave

[mayub]

Thanks Dave, I ordered new heat pump to try, apparently the current unit’s heating element seems working fine, means tracks are solid no breakage and continuity test proved that as well however other three pins readings seems fine as well I have measured the resistance between pins 1,2 and 1 and 3, in both cases it registered about 9K ohms and between pin 1 & 3 simply added to give about 18Kohms. I am not sure about pump testability. I will share the progress of machine functionality here with new pump. Due to Ester holidays, delivery of unit delayed.

[Author]

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