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Hotpoint H20 on a washing machine

The machine is not filling with water, or not filling fast enough.

The same code appears on Indesit, Ariston and Whirlpool machines — they share the same control platform.

Verdict

You can fix this yourself

No special tools or qualifications needed

Urgency
Fix soon

About 27 min to work through

Typical cost

Free to £120

DIY: Up to £30 in parts

What H20 actually means

H20 — displayed as "H2O" on some panels — is the Hotpoint and Indesit water supply fault. The machine opened its valve and did not see the level rise in time. As with every fill fault, start at the tap and the inlet gauze before suspecting anything electrical, because that is where the answer usually is.

Before you start

  • Water: Turn the supply tap off before unscrewing the fill hose — it stays pressurised.

What causes it, most likely first

  1. Water tap turned off or partly closed

    Most likely

    The commonest cause by far, and frequently follows plumbing work or a period away from home.

    How to check: Trace the fill hose to its tap and open it fully.

  2. Blocked inlet filter gauze

    Most likely

    A fine mesh in the machine's inlet port scales up in hard-water areas and chokes the flow to below what the machine will accept.

  3. Kinked fill hose

    Common

    Crushed flat where the machine has been pushed back against the wall.

  4. Blocked pressure switch hose

    Occasional

    The level sensor cannot see the water arriving, so the machine reports a fill failure while filling normally. Often paired with over-filling.

    Pressure switch / level sensor£12–£32 for the partEngineer

  5. Failed inlet solenoid valve

    Occasional

    The valve fails to open electrically. Confirmed only after the supply and the gauze have been proven good.

    Inlet solenoid valve£12–£30 for the partDIY with care

How to fix it, step by step

  1. Open the tap fully

    Follow the fill hose to its tap and make sure it is fully open. If the machine has separate hot and cold fills, check both.

    2 min

  2. Prove the supply

    Turn the tap off, unscrew the hose at the tap end, aim it into a bucket and briefly open the tap. A strong flow tells you the supply is fine.

    5 minBucket

  3. Clean the inlet gauze

    With the tap off, unscrew the hose at the machine end. Ease the mesh gauze out of the inlet port with long-nose pliers, rinse it, and descale it in vinegar if it is furred. Refit it squarely.

    10 minLong-nose pliers

  4. Reconnect and test

    Straighten the hose, reconnect both ends hand-tight, open the tap and check for leaks. Run a rinse cycle and listen for water entering within thirty seconds.

    10 min

Need an engineer for this H20?

We list 83 washing machine repair businesses across the UK, 41 of which are Hotpoint-authorised. Diagnostic callouts typically start around £55, and many will put that towards the repair if you go ahead.

Find washing machine engineers near you

Parts you might need

Typical UK prices for the part alone, before fitting. Worth knowing before you accept a quote — the part is often a small share of what a repair is priced at.

  • Pressure switch / level sensor

    Reads how much water is in the tub via a thin air hose. Blocked hoses and split diaphragms make the machine over- or under-fill.

    £12–£32

  • Inlet solenoid valve

    The valve behind the machine that opens to let mains water in. Blocked inlet gauzes are a far more common cause than a dead valve.

    £12–£30

Worth repairing, or replace it?

At the top of this range the repair costs a significant share of a graded replacement, which typically starts around £200. Worth getting the quote first, then deciding — on a machine under about five years old a repair usually still wins.

Work out if it's worth fixingCompare graded washing machines

Related problems

Other Hotpoint washing machines codes

All Hotpoint washing machines fault codes