Lamona dishwasher woes...

SG27

I have a fully integrated Lamona slimline dishwasher that was installed with our new kitchen a couple of months ago. We have been moved in a week now after finishing the rest of the renovations.

To begin with the dishwasher didnt work and showed error E02, no water. I checked and wiggled the pipe to look for kinks or squashed pipe and it started working. It worked fine for a week. Until the plumber installed a pressure reducer as he was concerned about how high the mains pressure was. Now the dishwasher no longer works. Showing the E02 error again.

The recommended pressure in the manual is 0.1 - 1 bar. Our reduced pressure is running at 2.5 bar. (1 bar or below seems very low to me for mains pressure??)
So our water pressure is still too high if anything. I pulled the dishwasher out and disconnected the inlet hose from the back of the dishwasher to check it. When turning the water back on I just get a trickle. So I took the other end off thinking it blocked with crap in the pipe and noticed a small white mesh filter in the end of the dishwasher pipe. I removed the filter and re attached the pipe to the mains, now it's full pressure. Yet when putting the filter back in I get either a trickle or even a complete blockage!

Does anyone know what this filter is? What is its purpose? And why is it stopping the water to a trickle at best?! I'm tempted to plumb it all back together without the filter but I'm wary of blowing the dishwasher up! :rotfl:

Hoping I can fix myself before calling lamona to have a look...?

nofoollikeold

1. The Lamona manual has an error. It states cold water pressure range as 0.03 MegaPascals to 1.0 MegaPascals, and equates these as 0.3 to 1.0 bar. In fact 1 MegaPascal is equal to 10.0 bar, not 1.0 bar.

Many places have mains water pressure exceeding 1.0 bar, which further reinforces that the manual is in error.

With regard to the filter, if there is a filter in the inlet to the dishwasher, I'd suggest omitting the one you describe, but keep it in case of warranty claims.

EssexExile

I can't think why the filter would cut down the flow that much unless it is blocked, which is possible if you've had plumbing work done. If you're sure it's clean but still causing a problem then, as the Old Fool says, leave it out.

SG27

EssexExile wrote: »

I can't think why the filter would cut down the flow that much unless it is blocked, which is possible if you've had plumbing work done. If you're sure it's clean but still causing a problem then, as the Old Fool says, leave it out.

Its perfectly clean. I can only think that is faulty? Or maybe it's done up too tight, not that it is particularly tight but just thinking if the filter is being crushed against the valve. Worth a try.

SG27

The flow does increase as I loosen it but not very much until the valve starts leaking as its too loose. Still not sure about taking the filter out?

getmore4less

Had a look at the installation manual and can't see anything useful

Can the filter go in the other end of the connecting pipe or is it designed to fit into the dishwasher then connect the pipe?

It is the right way round?

Aylesbury_Duck

I'd leave the filter out. It's there to prevent debris entering the dishwasher but how much debris is likely through a mains supply and how serious an effect is it likely to have? I think it worth the small risk. What's the alternative? A non-working dishwasher. You can expect a cheap dishwasher to last 3-5 years and I suspect it will fail on something else before it fails on anything supply-related.

EssexExile

SG27 wrote: »

Still not sure about taking the filter out?

Don't worry about it, lots of dishwashers & most washing machines, that use the same solenoid valves, don't have filters. I used to repair them for a living & I've never known the lack of filter to cause a problem.

SG27

getmore4less wrote: »

Had a look at the installation manual and can't see anything useful

Can the filter go in the other end of the connecting pipe or is it designed to fit into the dishwasher then connect the pipe?

It is the right way round?

The manual doesnt mention anything about ensuring the filter is in. It fits the end attached to the mains valve. Unless it actually should fit the other end of the pipe where it connects to the dishwasher. I'll try that!

getmore4less

Every dishwasher and washer I have owned the inlet filters have been at the machine end.

SG27

The filter wont fit in the other end of the pipe. The dishwasher has its own built in filter anyway so just plumbed it back in without it. It worked fine so think ill just use it without It!

Thanks all.