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bosch dishwasher not heating water

  • 16-04-2017 12:34pm
    #1
    Jim79
    Registered Users Posts: 220 ✭✭


    bosch dishwasher not heating water. Can it only be the heater pump causing this problem?
    can i test this device?
    there is 2 plug sockets the one on the right of photo i tried with a multimeter and it measures 40 ohms.


Comments

  • #2
    The Red Ace
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭The Red Ace


    the heater is where the three contacts are, inside one is earth and outer two are to the heater coil followed by the small push in pair of wires that read temp. outer ones are for motor, these pumps are problematic with heating elements which cannot be bought as a spare you have to buy the heat pump


  • #3
    Jim79
    Registered Users Posts: 220 ✭✭Jim79


    RIght so to test the heater pump i have placed the multimeter across terminals as can be seen in the photo.

    Have i placed them on the right terminals?


  • #4
    The Red Ace
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭The Red Ace


    your photo shows two pumps, small on is the emptying pump, big one is the circulation pump which contains the heating element, the terminal block with the three heavier wires are the feed to the heater, earth live and neutral the nearest terminal to the sump is earth so check the two outer ones for continuity/resistance. the d/w will complete the cycle even with the heater falty


  • #5
    Jim79
    Registered Users Posts: 220 ✭✭Jim79


    Just to make sure i understand you. i have attached this photo using the multimeter.

    Is this the right place?

    If it is it reads 2 mega ohms :(


  • #6
    The Red Ace
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭The Red Ace


    you are on the correct terminals for the heating element, any I have come across had open circuit elements but looks like your one is not getting a supply from pcb, I will pm you how to investigate further


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  • #7
    homewardbound11
    Registered Users, Registered Users 2 Posts: 915 ✭✭✭homewardbound11


    Hi The Red Ace .

    Can you please send on the same info if you can . I’ve the exact same issue . No heat during drying and was tripping the rcd intermittently before it gave in . Thanks


  • #8
    The Red Ace
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭The Red Ace


    To test it do the same procedure as Jim 79


  • #9
    homewardbound11
    Registered Users, Registered Users 2 Posts: 915 ✭✭✭homewardbound11


    Yip . Heat pump gone . 160 Euro is not worth for a replacement . New machine for 350 . Not worth fixing . Terrible redundancy but that is modern appliances .


  • #10
    necstandards
    Registered Users Posts: 191 ✭✭necstandards


    Hi - seems to be having the same problem. Tripping circuit breaker and not heating up. Checked the HP terminals & have an open circuit.
    1. Heat pump
    https://www.buy-spares.ie/dishwasher/smv40c40gb44/heat-pump/product.pl?pid=5300423&shop=bosch&path=128593&refine=pump&model_ref=13026802

    2. Heat pump assembly.
    https://www.buy-spares.ie/dishwasher/smv40c40gb44/heat-pump-assembly/product.pl?pid=5244066&shop=bosch&path=128593&refine=pump&model_ref=13026802

    i dont understand what the difference is, or which one i need. Appreciate some advise here please.


  • #11
    The Red Ace
    Registered Users, Registered Users 2 Posts: 1,377 ✭✭✭The Red Ace


    either will do, one has larger motor windings, if you are replacing it check the part number of your faulty one and email the supplier for a like replacement


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  • #12
    StephenS147
    Registered Users Posts: 153 ✭✭StephenS147


    If it's the element that's causing the RCD to trip (which is usually the case) you can purchase the element separately for 20eur including P&P from the guy in this video below. He has left his email in the comment section of it.

    Check the 4:10min mark for how he tests the element. Or if it is the pump he also may have one lying around as I busted the rubber seal for the element and he sent one for free along with the element.

    I'm just after replacing mine today and it works a treat.

    If your element / pump is different he may be able to help you out. He's very quick to respond to emails.

    Here's that thread of mine: https://www.boards.ie/vbulletin/showthread.php?t=2058048685

    Here's that video.


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