Lamona Internal leakwhat to check
E:01 with signs of water. Howdens give the shortest and one of the best instructions of any brand — turn off the water and the electric, and call.
Stop — this needs an engineer
Get a qualified appliance engineer to look at your Lamona dishwasher
We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What this means
This is the serious one of the three, and Howdens deal with it in a single line: internal leak, signs of water, turn off at water supply and mains electric, call for a Service Engineer. That is it. No troubleshooting, no suggestion of running it again, no invitation to investigate. For a kitchen retailer’s own-brand appliance it is a notably better instruction than several major manufacturers manage on the same fault. LG’s manual tells you to call for service if the same problem occurs again and neither of their documents mentions the tap.
Baumatic send you to check the drain hose. One Samsung support page suggests taping a leaking hose. Howdens tell you to isolate the machine and stop, which is the right answer. The thing to understand is how you get here, because the display does not say leak.
The manuals show this condition under fault code E:01, the same code the machine shows for not draining water, and the two are separated by one test: signs of water. E:01 with a dry floor, a dry base and a tub that will not empty is a drain fault, and there is a page for that. E:01 with water anywhere it should not be — on the floor, under the door, in the base tray, dripping from the plinth — is this page. That shared code is the real risk. Someone who has looked E:01 up once and found a kinked drain hose will next time straighten the hose and press start, with water standing under a machine sealed into a run of units. If your Lamona shows E:01, look for water before you touch anything.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| Internal hose or joint leaking | Water escaping inside the cabinet and reaching the base where the machine detects it. The commonest cause and often a modest repair. | Common |
| Door seal perished | Water running down the inside of the door and collecting underneath rather than escaping visibly onto the floor. | Common |
| Sump or tub leaking | A split or a failed seal in the base of the machine. The expensive end, and it has to be found before it can be priced. | Occasional |
| Heavy foaming overflowing the tub | Washing-up liquid in the machine produces foam that can climb over the tub and reach the base, which reads as a leak. | Occasional |
Can you fix it yourself?
Stop — this needs an engineer
What it costs to fix
Typical repair cost
£80–£260
Around £80 to £170 for a hose, joint or door seal. Sump or tub work runs higher. Lamona machines are integrated, so add time for getting it out of the run.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related Lamona fault codes
- Not draining waterGet it checkedE:01 without signs of water. Howdens name the drain hose, but the filters and the sink trap are worth checking too.Related: same brand
- No water supplyGet it checkedE:02, with the tap symbol lit. Howdens give two checks and, in two of the four manuals read, the only reset they publish — press start twice.Related: same brand
Own a Lamona dishwasher? Save it and its codes come first next time.
Related guides
Common questions
What exactly does Howdens tell me to do?
Their whole instruction: turn off at water supply and mains electric, call for a Service Engineer. Both isolations, in one line, with no suggestion of trying anything first. It is one of the better leak instructions in this category.
The display says E:01. How do I know it is a leak and not a drain fault?
Howdens list both under E:01 and separate them with three words: signs of water. Look under the door, along the plinth and, if you can, into the base tray. Dry everywhere and a tub full of water means not draining — see that page. Water anywhere outside the tub means this page, and the answer is to isolate the machine, not to reset it.
There is no water on the floor. Is it a false alarm?
Probably not. The detection is in the base of the machine so that it catches water before it gets out, and a dishwasher sealed into a run of kitchen units hides a leak for a long time. A dry floor means it caught it early.
Can I tip the machine to drain the base?
No. It is the advice you will find everywhere for dishwasher water faults and it is wrong for every brand. It clears the signal without touching whatever put water there, and disables the thing that told you.
Who do I call — Howdens or an appliance engineer?
If the machine is within its Howdens guarantee, start with them, since the guarantee is theirs rather than a manufacturer’s. Outside it, any competent appliance engineer can work on a Lamona. Howdens do not name the manufacturer, so nobody can offer you brand-specific expertise on one.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer technical and service documentation
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.