Hotpoint LBT4B019 Integrated Dishwasher Failing After 5 Mins
Customer Question
Matthew Miller asks:
Hello Paul i hope you are well and had a good w end 🙂Just an update on the Hotpoint LBT4B019 integrated dishwasher. I took it apart at the w end and all seemed to check out ok. The heating element had good continuity and read 32 ohnms. The motor had a resistance reading of 32 ohms which i thought was ok as it has a mass of coil windings. The motor when taken off the heater and cleaned i found that the impeller shaft had a lot of play in it as though the housing bearing had collapsed but im not sure if this is how it should. When the motor was together and i spun it it spun freely well spun free for half a turn then went tight and seemed notchy ( like a spring was being released) but i think this may be how the motor works with the magnets around it?i took out the spray arms and the spray arm feeders,cleaned them and found no real blockage. I cleaned out the return hose that again didnt seem to bad.i removed the inlet water pipe and checked the filters in the hose and the machine inlet filter but they were fine.i checked the pressure switch (the rubber hose that goes from the switch, up the side of the machine and attaches to the base of the sump. I blew through this rubber hose when disconnected and it was clear. I tested the contacts in the switch (open circuit at rest, when i blew through the switch there was continity)im not sure where to go now other than buy a new machine as the cost of repair is really not worth it with the cost of a nearly new machine and then something else may fault with the repaired machine.Do you have any advice of where could go and check or what to check? i havent taken out the clear bottle at the side of the machine as that means the whole side coming off which i dnt mind doing.i will attach a image of the machine what it shows when it faults. I can not find any information about what this sequence of lights mean when they illuminate and the machine stops The power light flashes very fast and the eco light (led 1) and the normal wash cycle (led 3) illuminate straight and stay on constantly (they do not flash)My owners manuel doesnt show any meaning to this and no where on the internet shows a hotpoint with these lights showing and then an explanation. I know you said that the info on hotpoint can be a bit hit and miss.If i try 5 times to run a cycle it will fail 4 times but work on the 5 and perform with no faultskind regardsmatt miller
Model: Lbt4b019
Paul Says:
I will try and help with this problem about Hotpoint LBT4B019 Integrated Dishwasher,
Hi Matthew,
Thank you for your detailed explanation of the issue with your machine. Unfortunately, I don't have technical information or workshop manuals for this model, as Hotpoint isn't great at providing such details to the public or independent engineers.
Looking at the diagrams below, I suggest removing part number 25. From the side view, you'll notice sludge and dirt build-up inside this plastic matrix. To detach it, there’s a screw inside the dishwasher with a 40-millimetre thread. It appears to be where the water comes through but is actually threaded. After undoing this, there may be a couple of screws holding it in place from the outside. You'll need to remove the left-hand side panel of the machine.
These parts often cause problems. There's an impeller jug that spins as water enters the machine. If it doesn’t work correctly or if dirt or calcification builds up at the top of this unit, it can cause issues. These air brakes or water matrices have been a common fault in many dishwashers over the years. Either the impeller fails to measure water correctly or water can’t flow through properly, causing problems.
As you mentioned, it worked only once out of five tries, which suggests this could be the issue. The part isn't expensive and I've included its number in the description. If you think this might be the problem, you can search our site for the part number or use the link in the sidebar where it’s definitely in stock.
It's not difficult to change but worth taking off and cleaning. There’s an electrical connection on a small circuit board next to the turbine to be careful with, but it comes off easily.
I hope this helps you. Part number for the flow matrix C00256546
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Hotpoint LBT4B019 Integrated Dishwasher
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