Bosch Exxcel Not draining

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  • July 24, 2014 at 7:42 pm #81596
    Colin_Fed_Up
    Participant

    I have a BOSCH SMS65E12GB Exxcel dishwasher and it wont drain correctly. I have replaced the pump and still the same problem.

    The drain pump starts to pump then stops and keeps starting and stopping until I get a E24 error. I have taken the side off and disconnected the hoses and cleaned them out. I have connected a hose pipe to the pump side and run it through the whole system and it flows easily and clean.

    With the old motor i have connected it to the wires and it seems to spin constantly like i would expect but when I connect the wires back up to the motor in the sump, it starts pulsing.

    I am now wanting to throw it to the curb, please help

    July 24, 2014 at 8:02 pm #417113
    Martin
    Participant

    Re: Bosch Exxcel Not draining

    Try replacing the small reed switch in the matrix (fill tank) as that can cause E24 errors also. Cheap fix too if it works. 😀

    July 24, 2014 at 8:09 pm #417114
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    Is that the little glass thing about a 1/3 way up on the heat exchanger (the large plastic tank on the left side)?

    July 24, 2014 at 8:54 pm #417115
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    I have just had a look at that. Isnt that for the water temp in the heat exchanger? Everything works fine except the water wont pump out.

    July 24, 2014 at 9:09 pm #417116
    Martin
    Participant

    Re: Bosch Exxcel Not draining

    Colin_Fed_Up wrote:Is that the little glass thing about a 1/3 way up on the heat exchanger (the large plastic tank on the left side)?


    Yes yes. It’s a reed switch. Often that can cause the E24 (drain) error.

    July 24, 2014 at 9:33 pm #417117
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    Is the default open or closed for the switch? I can unplug it or short it to test

    July 24, 2014 at 10:37 pm #417118
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    I just read that the reed switch is a flow sensor. It is next to the output so i assume it is checking flow rates which is why the pump starts and stops? How do you change it? I cant see any screws or tabs to get it out.

    July 25, 2014 at 6:42 am #417119
    Martin
    Participant

    Re: Bosch Exxcel Not draining

    You bend back the plastic flap then carefully removed old one etc……

    July 26, 2014 at 12:29 am #417120
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    Well I unplugged the reed switch and let it do a cycle and got an E14 error as your would expect. I then plugged it back in and ran another cycle and it worked correctly. I have now done another 5 washes and it is still pumping correctly. I am amazed that it is still working. Going to put it all back together and see if it still pumps correctly but looking good so far. Will let you know what happens

    July 27, 2014 at 8:30 pm #417121
    Colin_Fed_Up
    Participant

    Re: Bosch Exxcel Not draining

    Well it looks like it is fixed. Done another 4 washes and it is still going. Thanks guys for the help

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