Dishwasher draining/pressure issue - Possible install issue?

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tardtasticx

3075 posts

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#253042 22-Jul-2019 20:26

So we have a dishwasher that has been installed in the same position for multiple years, drain and water inlet hose never moved.

It had been fine for a good 3 - 4 years, about 6months ago it started to stop mid-cycle and throw an E1 code with the pan inside being full. Starting the cycle again would get it to complete with no issue. Until one day it didn't. We got someone out, they blamed it on a clogged drain. No issues since, regular cleaning has kept it fine so we thought.

Tonight the pan filled and overflowed, and it gave the same message again. But this time when I opened the door and shut it again, it would resume the cycle and drain instantly without prompt. So this leads me to believe that the drain and pump are completely fine, if it were blocked it wouldn't then drain itself?

We looked online and the Omegas E1 code came back as meaning "Faucet is not opened, or water intake is restricted, or water pressure is too low."
This points to an inlet pressure issue from what I can tell, it's a mains fed machine and the tap it splits from doesn't have pressure issues either. I can't figure out why it would complain about water pressure, and then allow itself to flood.

Anyone had any similar experience or got any ideas? We have a plumber over tomorrow for an unrelated issue with our hot water cylinder so I might get them to take a look for pressure issues but I don't know if it will be something they can really help with.

Dishwasher is an Omega ODW702W and I'm about to throw the thing out at this rate.

[Mod edit (MF): Moved to correct sub-forum.]

wazzageek

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#2281821 22-Jul-2019 20:59

It could be a build up of detritus in the inlet pipe - there could be a mesh filter in there, which is clogging from mains pressure .. then when it “stops” accepted water in with the E1 code that could be enough to help dislodge the blockage.

I managed to do something similar when I jammed and creased the inlet pipe of our dishwasher (different make though). That caused all sorts of issues.

sqishy

470 posts

Ultimate Geek

#2281825 22-Jul-2019 21:34

Sound like above post is the right thing to check, but you can also pull out inside filter at bottom middle and see if you can find where it drains, sometime there is a removable cap over the pump which gets stuck with a long hair/fluff, this may be why is stops but then starts later.

robjg63

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#2281865 23-Jul-2019 01:34

They have solenoids which open to let the water in to the machine. They play up sometimes and don't open enough, so water wouldnt fill quickly enough. Could be something like that (don't think they are usually super expensive).
Seems odd it's complaining when it should be emptying though. That makes you think of pump or blockage. Does the waste pipe from the dishwasher go to a high point (higher elevation than where it connects to the household waste pipes). The washer waste hose should always have always have to pump uphill and the final bit flows down to the plumbing. If it doesn't have a high point they don't pump properly and often won't empty.

Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler

mattwnz

20173 posts

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#2281868 23-Jul-2019 02:05

When we had similar problems, not the same brand, it was rice that had got caught up in some valve.