Question about Miele Dishwashers

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Miele G1270SCVi The washing powder tablet flap fails to open and release. The flap will release manually so the spring catch latches and releases ok.

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  • jangeo Aug 07, 2008

    I removed the front cover of the dishwasher door to expose the detergent flap mechanism. The flap latch is not operated by bi metal or wax expansion as suggested by "Sweet Rascal" but by a solenoid operated lever. Bearing in mind that this machine is only just outside of the 12 month warranty (Sods Law) and my wife uses the modern tablet detergent, there was no caked up detergent to cause the flap to stick. I checked the solenoid with my multimeter and found it to be ok. I then switched the mains back onto the machine and lo and behold the machine flap worked ok. I had jiggled the cables at the bottom door hinge point because I did have a broken cable problem with an earlier machine that we had. Whether this was the cause (I don'think so) or whether it was an electronic glitch that has reset when I disconnected the supply I don't know. Time will tell! If the solenoid fails to operate again do you have any further solutions?


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In some instances the tablet can exert a slight outward pressure on the inside of the detergent dispenser flap. This may be due to the manufacturer changing the design, different brands or simply inserting it differently. The release mechanism may work for a while with no issues but in certain instances it may cause the flap to bind and fail to release. If the flap seems to work with no tablet in the cup this may be all that it is. In other instances it may have been a stray electronic fault but if it reoccurs then then I doubt that it was a stray.

This was a common occurrence on Asko machines which use a similar release mechanism and Bosch machine which use a wax motor.

Posted on Aug 07, 2008

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If the detergent cup doesn't open, check the detergent cup, the bi-metal switch or wax motor, and the timer. Make sure that no dishes are blocking it from opening.
The cup that holds the detergents can get caked and gooped up with old detergent. You should try to clean away any old detergent. If you can't clean the detergent away, you should replace the cup.
The bi-metal switch is activated by the timer and is an electrically operated device that bends when electricity is applied to it. It uses two different metals that are bonded together. As they warm up, they expand at different rates causing the metal to bend. The degree of bending can be set with a high degree of precision. Many devices use the bi-metal switch. A lot of newer dishwashers use a wax motor instead of the bi-metal switch. The wax motor has a wax block that gets heated up when the timer sends electricity to it. The wax expands as it gets heated up, and it pushes a plunger that opens the detergent door. Depending on how your dishwasher is wired, the switch may be wired through the motor circuitry or through the heating element. If the heating element is broken, there will be no electricity to properly activate the switch or heat the wax block in the wax motor to open the cup. If the motor doesn’t let enough electricity through its circuit, the bi-metal switch won't operate properly, or the wax motor wax block won't get heated up to expand and push the plunger.
On many dishwashers, an actuator arm links the timer to the detergent cup. When the timer reaches the correct time of the cycle, it activates a lever that opens the cup. If this link is broken or in any other respect faulty, the cup will stay closed, and won't let the detergent into the dishwasher. Check this linkage and either fix or replace it.

Posted on Aug 07, 2008

  • dewan nafees ahmed Aug 10, 2008

    yes you are right when ever there is a electronic fault disconnecting from the power supply will reset the machine.

    if the solenoid fail again please tell us what happens what time in detail. and i will help you with some other solution.

    thank you


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