Hotpoint SDL510 Stopped Pumping

[Ash Kiwano]

Hi! Looking for help with my Hotpoint SDL510 Dishwasher , it has started to flash these two lights and won’t drain the water, I usually hear a pump but nothing, I read online it may be a blocked waste pipe but I have used a wet and dry vacuum on it and there are no obstructions so I am now confused?

https://ibb.co/xY0CqCb

Thanks!
Ash

[electrofix]

could still be blocked
if its jammed completly it will just be a faint hum which can be difficult to hear

Dave

[Ash Kiwano]

Hi Dave

I’ve put the wet and dry hoover on the end of the pipe and can feel the suction from the bottom of the drain inside the machine so it can’t be blocked still.

I know the hum that you’re talking about which it usually makes when it’s draining but it’s completely silent now

[electrofix]

no you dont get it
if the impellor is jammed and cant move it will make a very quiet hum but you have to listen very hard to hear it

Dave

[Ash Kiwano]

Okay I’ll pull the machine back out, will the sound come from the back of the machine? Thanks

[electrofix]

the sound will come from the pump and probably very faint

you can see the grey outlet hose coming off the pump

Dave

[Ash Kiwano]

Hi! So I have the panel off and I can hear a very faint noise it sounds like a high pitch noise ?

[Ash Kiwano]

Here’s a photo of the underneath

https://ibb.co/XJXhJtJ

[electrofix]

remove the pump and see if its jammed

there are normally plastic clips to lock it on

Dave

[Ash Kiwano]

Is that the white thing on the right in my photo?

[electrofix]

correct
photo a bit blurred but you can see the lock and pump twists and unlocks

Dave

[Ash Kiwano]

Hi!

so I took the panel off today and removed the motor and i couldn’t see anything wrong with it?

here is a video

https://streamable.com/gynlyj

Put it all back and started a cycle and again, would not empty, any suggestions now?

Ash

[electrofix]

no that looks good

well next thing i would have done is checked the pump windings

if ok i would then trace the pump wires back to the board and check continuity

then look where the pump connects to the board and trace the connections to the triac that controls the pump and look for circuit damage

Dave

[Ash Kiwano]

Hi Dave

I just want to say thank you for all your help, I’m not an electrician so I have no idea about checking circuit boards etc, I was just trying to save this from
being scrapped and calling someone out is going to be just as expensive as a new dishwasher.

Thank you again
Ash

[electrofix]

no problem

i was hoping it was glass in the pump as it normally is but you get the challenging one

Dave

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