Hi I'm Josh from eSpares
And in this video I'll be helping you to diagnose draining and motor problems
in your dishwasher let's start with a dishwasher that isn't draining
at all. This is usually I'm caused by a foreign object finding its way into the
drain pump
and blocking it. A lot of the time this can be
a piece of and broken glass. If you put a glass
in your dishwasher and it shatters make sure you collect
all the pieces out to the dishwasher and have a look
around the the filter as well to make sure you collect any pieces out. And
if possible try and establish
from the pieces whether you've got a complete glass. Now
if a piece has been washed down into the drain pump
you can usually hear when you first put your dishwasher
onto a cycle, after about five seconds or so
you hear the drain pump making a very low
humming sort of noise, and thats usually because
the piece a glass is blocking the impeller from
turning. Now if that's the case you obviously need to remove the
blockage, and to do that you need to get to you the
bottom of the dishwasher so start by
turning off the water supply and disconnecting the inlet hose from
the back at the dishwasher so you don't damage it and then you need to lay the
dishwasher down
onto its back not onto its side and as you do cite
very careful to not trap the drain hose underneath
now most dishwashers
have a removable baseplate underneath. On this one it's just removed by unscrewing
these four screws heer. However it's also
important to bear in mind that on the other side of the base plate
is an anti flood switch. Now to fully remove the baseplate
I need to disconnect that anti flood switch so
once i have unscrewed these four screws I'm also going to unscrew the anti flood switch
as well.
Now this is the
drain pump hear in order to remove it there is a screw
holding in place on this side they may also be another one on yours
on the other side of it as well I'm so we need to take those out. Now before I do that
I just need to pull of these two connections.
And then once had taken the screws out
I can twist the drain pump and pull it off.
Now if any debris has found its way
into the pump it'll usually settle in this area
around the impeller and you can just pick that straight out.
Then just checked the impeller is rotating
normally It is usual for it to rotate in a slightly
jerky motion because of how the magnet works but check that that's okay
I'm also very gently check inside the chamber
the pump and screws onto just make sure there's nothing
blocking at the pump in there. And once you happy with that you can also double
check that the pump is
working normally just by taking a
resistance reading across these terminals here.
For normally functioning pump youI should get a reading around about 200
ohms
And once your happy with all of that you can just pop the pump back on.
Now once you've checked
the drain pump is all O K and the dishwasher still
isn't draining some dishwashers also have a flap
that is fitted over the out clip that feeds
into the drain hose now this flap a opens and closes and can
get stuck. So if that's happening on
your dishwasher just remove the drain hose
from the pump and just checked that flap for any debris that might be causing
it to stick down check that the rubber isn't tacky.
If it is you either need to clean the flap or replace it.
There's also problem the dishwashers can develop
whereby they constantly drain all come back to that
in a minute or two. Moving on to noisy pumps
older drain pumps and wash pumps can
developed quite a noisy squeal on when they get
older now this is usually caused by worn bearings if that's the case you
need to just
replace the pump all together.
Wash pumps generally speaking are quite reliable but they can
get blocked up us with a drain pump now if that's the case obviously
remove the blockage from the wash pump if there isn't any sort of blockage
the capacitor here attached to the motor
and that can burn or develop some sort of bulge
I'm just checked around the terminals and at the bottom for any burns
or bulges that you might
be able to find on and once you've checked the
capacitor isn't damaged it may simply be a case of
replacing the wash motor hear.
Now before I put the base of the dishwasher back on it's also worth
mentioning the
anti flood switch. If when you first put your dishwasher on
you can hear it constantly draining. It may be because
water has flooded into the base and has caused this
polystyrene float to lift up and activates the
anti flood switch. Now if that is the case you'l obviously need to
drain any water and out of the base
and also establish obviously where the
source of the flooding is coming from.
I'll now put the base back onto the dishwasher
have a look at a dishwasher that's constantly
draining.
Returning to draining faults if your dishwasher is constantly draining and
this can be caused in
two ways firstly by the flooding
in the base which is triggering the anti flood switch
and secondly if the and of the
drain hose is set to level lower than the water level
in the dishwasher, It's gonna create a siphon
affect. Now the water level usually fills to
just below the door seal here,
so if you've got the end of the drain hose set to a level that's lower than
that that's going to create
the siphon. So to rectify that you can very simply just
reset the drain hose to a level higher the water level
in the appliance. Now most drain hoses come supplied
with this to crook attachment. And you can use that when setting the drain hose
into the drain to make sure that the hose
doesn't go too far down and create the
siphon effect. Now if you need help diagnosing
any other faults in a dishwasher check out our other diagnostic videos
and spares for dishwashers along with other appliances are available on the
eSpares website.
Thanks for watching.