Hi I'm Josh from eSpares
and in this video I'll be helping you to diagnose filling and dispenser problems
in your dishwasher. let's start with the dishwasher isn't filling with water
that can be a few reasons as to why that might occur
it could be that the supply hoses twisted
or blocked so you can check that. It maybe that the fault lies
in the dishwasher or it could be a problem
with the water supply itself. Now a good way to check
is to turn the supply of at the tap and then disconnect
the inlet hose from the back of the dishwasher
then grab a bucket and turn the supply back on
and try and fill the bucket with water from
the hose. If the flow of water is quite fast or if it's what you would
normally expect
to be coming from your tap then that would indicate that the supply
is OK and the problem lies in the dishwasher.
Once you've established that the supply is okay and that the problem
is in the dishwasher the next place to have a look
is the solenoid valve at the back and if I just turn this dishwasher around
to give you a better look and you can see I've taken the
panel off the side. Now to test the valve
itself for whether it's working. You can use
a multimeter so just start by removing the connections
from the valve like so.
And then grab your meter and put that on to a medium to high
resistance setting. And place the probes
of the meter onto the terminals of
the valve. Now for a working valve you're looking for reading a somewhere between
2,000 and 5,000 ohms
and on this 1 I'm getting about 4,000 so that shows that it's OK.
Obviously if you get readings that are significantly
outside those figures then you should replace the valve.
Now once the water is coming through the solenoid valve
on some machines it then goes through a flow meter
on on this particular dishwasher it comes up through this hose
here through this air break or heat exchanger
then down through this hose into the sump at
the bottom of the dishwasher was monitored by a pressure switch.
Now to show you the pressure switch we need to have a look at the other side
of the dishwasher. This is the pressure switch
here and it's connected to the sump
through this thin pipe here.
Now as water comes into the sump
it forces air along this tube
into the pressure switch. And the pressure switch takes a reading of how
much
air is coming into it. Now from that it can determine how much water
is in the sump however if a blockage
forms in this pipe the air isn't gonna be forced through it properly
and the switch isn't going to take a proper reading. Now as a result the
dishwasher is going to overfill and flood with water.
Now if that's happening with your dishwasher just have a look
at this pipe here if you suspect there might be a blockage
you can actually just remove the pipe
from the switch, and blow into its to clear any blockages
that might be in there. Now this dishwasher has an additional pressure
switch
here, this monitors the flow of water from the wash pump.
Now if your dishwasher has two pressure switches
and you're in doubt as to which one is monitoring the sump, you can just blow
into both to be sure.
Next let's have a look at dispenser problems in your dishwasher.
Now the dispenser has two functions
to release detergent and to release rinse aid.
A couple of minutes into the cycle the dispenser will
open making that very distinctive thumping noise
and release the detergent
and also during the final rinse cycle you may hear a very slight buzzing noise
as the rinse aid is released into
dishwasher. Now if you don't hear either of those sounds,
or the detergent isn't being released from the dispenser
you can see how to replace the dispenser in another eSpares video.
Now if you need help diagnosing other faults with your dishwasher check out our
other
diagnostic videos and spares for dishwashers along with other appliances
are available on the eSpares website thanks for watching