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Good evening, having issues with my whirlpool ADG7550. Having carried out the checks previously mentioned on the forum, I can say that several minutes after starting a cycle, I get lots of beeping, there isn’t any water in the dishwasher nor has it rinsed at all and I’m getting 4 flashes of the code light and the other light goes onto rinse icon. I have noticed the drain pump wobbles/kissers sometimes, so I removed it to find the impeller magnet section full of water (I presume this isn’t normal?). I also suspect a fault with the main pump, so I removed and stripped it down to find water again in the impeller magnet area. Although the impeller was still attached, I could turn it on the shaft (but it was stiff) I then filled half the pump with water and I noticed water coming through three tiny holes near to the shaft (again, not sure if this is normal?) So really I’m questioning weather it’s worth spending £60 & £30 on two pumps on a 5 year old plus dishwasher (it was in the property when we moved in 5 yrs ago)? Or is it coming to the end of it’s life? Sorry for the lengthy message. Thanks in advance.
Keith.Re: Whirlpool ADG7550
It sounds like a failure to drain but that’s all the code tells you, it hasn’t drained or at least, it can’t detect that machine has drained.
That could be a pump problem, blockage, pressure switch and so on that are all possibles.
K.
Re: Whirlpool ADG7550
Ok. But is it normal to have water in the magnet part of both pumps? Just trying to ascertain the condition of the main pump, if this is not a fault, then I can ignore it and take a chance on ordering a drain pump, as that’s where the fault code is and I can se it oscillating and not spinning sometimes? I appreciate you can’t give me a definitive answer, I’m just trying to decide weather to bin the whole machine.
Thanks. Keith.Re: Whirlpool ADG7550
Yes, there will always be water in the base of a dishwasher hence the first thing it does is drain that off to clear as much standing water as possible.
Depending on the design, there will be water in the pump housings because the magnetic commutator if you will is lubricated by that water. So you should have water between the motor commutator and the plastic housing for the magnets and field coil.
On magnetic pumps mechanical failure other than the very obvious is incredibly rare. If hey fail mechanically it’s patently obvious they’re knackered, usually the pump impeller will sheer off the shaft or something gets in with the water (particulates) that will lead to noise but other than that they are extremely reliable for the most part.
Electrically about all that an go wrong os the coil fails, goes open circuit or a TOC fails if fitted but almost all won’t have one, no need really if you use the correctly rated pump.
Basically if you dumb it down, it’s no more than a few magnets and a coil.
K.
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