Dishwasher Not Draining in Fareham - What to Check First

Published July 2026 | Dishwasher Not Draining - What to Check

This checklist covers every drainage fault you're likely to encounter with a domestic dishwasher, from a blocked filter to a failing pump. Catching problems early - whether you're in Fareham or anywhere across Hampshire - is usually the difference between a ten-minute clean and a repair bill running into the hundreds.

Quick Visual Checks Anyone Can Do

These are the first things our engineers check when they arrive at a job in Fareham. You don't need any tools, and the whole process takes under five minutes. Work through them in order before calling anyone out.

1. Check the filter assembly. Most modern dishwashers - Bosch, Hotpoint, Beko, and the rest - have a two-part filter at the base of the drum. Twist out the cylindrical mesh filter and lift out the flat plate beneath it. If you see food debris, grease, or a grey sludge, that's almost certainly why your machine isn't draining. Rinse both parts under warm running water and use an old toothbrush to clear the mesh weave properly.
2. Inspect the drain hose for kinks. The drain hose runs from the back of the machine to either your sink waste or directly into a standpipe. Check it isn't bent sharply behind the cabinet - a tight kink near the back of a kitchen unit is one of the most common causes of poor drainage our engineers see in Fareham homes. If the hose loops down to floor level before rising to the waste connection, you'll get a siphon effect that stops water clearing properly.
3. Check the sink waste connection. If your dishwasher drains into the same waste as your kitchen sink, a partial blockage in the trap will back water up into the machine. Run the hot tap for 30 seconds and watch whether the sink itself drains slowly. If it does, clear the sink blockage first before investigating anything else.
4. Look for standing water at the door seal. Open the door fully and check the bottom edge of the rubber gasket. A small amount of residual moisture is normal, but a pool of water sitting in the base after a completed cycle points to a pump or drain line fault rather than a sealing issue.
5. Note any error codes on the display. LG, Samsung, and Bosch machines all display fault codes when there's a drain problem. LG models commonly show "OE" for a drain fault. Samsung often uses "5C" or "SC". Bosch typically flashes a tap symbol alongside an error number. Write the code down before you call an engineer - it saves diagnostic time and may affect the parts needed.
6. Listen during the drain cycle. Start a short cycle and listen carefully when the drain phase kicks in - usually around 60 to 90 seconds into the programme. A normal drain sounds like a consistent hum and water movement. Grinding, clicking, or a hum with no water sound are all meaningful signals. Silence during the drain phase when there's still water in the base means the pump motor may have failed entirely.

Monthly Maintenance Tasks

Monthly maintenance is quick, costs nothing, and extends the working life of your machine significantly. Our engineers across Hampshire see more dishwasher drain faults caused by neglected filters than any other single issue - and it's entirely avoidable.

Clean the filter every month. A Hotpoint or Beko machine used daily should have its filter cleaned every three to four weeks as a minimum. Hard water areas - and most of Hampshire qualifies - accelerate the build-up of limescale and grease in the mesh, so if anything err on the side of cleaning it more often rather than less.

Run a hot maintenance wash. Put the machine on its hottest programme - typically 65 or 70 degrees Celsius - with no crockery inside and a dedicated dishwasher cleaning product in the base. Brands like Finish and Fairy both make good options that shift grease from the pump housing and the sump area. This is especially worth doing monthly if your household cooks a lot of fatty or starchy food.

Inspect and clear the spray arms. The upper and lower spray arms can be removed on most machines by unscrewing a central cap or pressing a release clip - check your manual if you're not sure. Hold each arm up to the light and look through the jets. Limescale blocks them gradually. Soak the arms in undiluted white vinegar for 20 to 30 minutes and use a cocktail stick to clear any remaining deposits from individual holes.

Wipe down the door gasket. Food particles trap in the rubber seal and cause odours as well as degrading the seal material over time. A quick wipe with a damp cloth once a month keeps it clean. If you notice mould or discolouration, a diluted white vinegar solution works well on rubber without damaging it.

Annual Professional Checks You Should Book

Some components are best left to a qualified appliance engineer. If your machine is over three years old and used regularly, an annual inspection is worth the cost - typically between 60 and 90 pounds for a standard service call in the Hampshire area.

Drain pump condition and impeller. The drain pump pushes water out of the machine. Over time the impeller - the rotor inside the pump housing - can wear or jam with glass fragments, small stones, or food debris that got past the filter. Grinding or humming during the drain phase with little or no water movement suggests impeller damage. A pump replacement typically costs between 80 and 150 pounds including labour, depending on the model and brand.

Inlet valve and water supply pressure. A partially blocked inlet valve affects how quickly the machine fills and, indirectly, how well the drain cycle times. An engineer can check water pressure quickly during a diagnostic visit. If you're in Fareham and not sure whether your fault needs a home visit, the Voltrade GoFIX diagnostic tool can help you assess the issue and identify the right type of engineer before you book.

Internal hose condition. The short hoses connecting the pump to the sump and the spray arm feeds can crack or perish, particularly on machines over five years old. This is hard to spot without pulling the machine out from the cabinet, but it's a quick check for an engineer and worth including in any annual service.

Heating element and limescale build-up. In Hampshire, hard water is a consistent problem. Limescale on the heating element makes the machine work harder and run hotter, which accelerates wear across the whole system including the pump seals. An engineer can assess the level of scale and recommend a descaling treatment if needed.

Warning Signs That Need Immediate Attention

Most drainage faults develop gradually, but some situations need dealing with straight away to avoid further damage.

Water on the kitchen floor. Switch the machine off at the wall immediately if you see water pooling beneath it or escaping around the door. This is usually a door seal failure, a split internal hose, or a cracked pump housing. Running a leaking dishwasher risks damaging flooring, cabinetry, and potentially the structure beneath.

A burning smell during the drain cycle. This typically means the drain pump motor is trying to run but has seized or jammed. Running the machine repeatedly in this state risks burning out the motor entirely, turning what might have been an 80 pound impeller clearance into a 200 pound motor replacement - or a write-off on an older machine.

Grinding or clicking sounds. Glass fragments from a broken item are a common culprit here - particularly after a breakage that you may not have noticed until afterwards. Stop the machine and call an engineer before running another cycle.

Completely standing water with no movement at all. If the base of the machine is fully submerged after a cycle and there's been no drainage whatsoever, you're looking at either a full pump failure or a blockage further along the drain system. On machines over eight years old, our Hampshire engineers will discuss whether repair is economical compared to replacement - a mid-range Bosch or Samsung dishwasher currently costs between 350 and 550 pounds new, so for a costly repair on an ageing machine, replacement can make more sense financially.

Your Maintenance Schedule

Here's a simple calendar to keep your machine running reliably year-round.

Every week

• Remove large food debris before loading dishes
• Check the base of the drum for standing water at the end of cycles

Every month

• Remove and clean both parts of the filter assembly
• Run a hot maintenance wash with a cleaning tablet
• Inspect and clear the spray arm jets
• Wipe down the door seal with a damp cloth

Every three months

• Check the drain hose routing behind the machine for kinks or tight bends
• Clear the sink waste connection the dishwasher shares
• Check around and under the machine for any signs of moisture

Annually

• Book a professional service inspection if the machine is over three years old
• Have the pump, inlet valve, and internal hoses checked
• Descale the heating element if you're in a hard water area - which covers most of Hampshire
• Check whether the machine's energy rating still justifies keeping it if it's over ten years old

Checklist Questions

What causes a dishwasher to stop draining suddenly?

The most common cause of a sudden drainage failure is a blocked filter or a small object - a piece of broken glass, a bottle cap, or a bone from food - jamming the drain pump impeller. Check the filter first: if both the mesh cylinder and the flat plate beneath it are clean, shine a torch into the pump housing at the base of the machine and look for debris. On Beko and Hotpoint machines, the pump access point is usually visible once you remove the lower spray arm. If the impeller is clear and the machine still won't drain, the pump motor itself may have failed and you'll need an engineer.

How do I know if my drain pump needs replacing?

A pump that's starting to fail usually gives you warning before it stops completely. Listen for humming or grinding during the drain portion of the cycle. If you can hear the motor running but water isn't clearing, the impeller is likely jammed or the pump is losing prime. If the machine is completely silent during the drain phase - when there should be an audible hum - the motor may have failed entirely. Both situations need a qualified engineer. A new drain pump fitted on a typical Bosch, Hotpoint, or Beko machine costs between 80 and 150 pounds including labour, though prices vary by model and part availability.

Is it worth repairing an older dishwasher or should I replace it?

As a rough working guide, our engineers recommend repair if the machine is under seven years old and the cost of the fix is less than 40 percent of a comparable replacement's price. A drain pump repair on a mid-range machine is typically 80 to 150 pounds fitted - well worth it on a three or four year old appliance. If the machine is over ten years old and you're in a hard water area of Fareham or elsewhere in Hampshire where limescale has caused ongoing wear, replacement often makes better long-term sense. New mid-range dishwashers from Bosch, Samsung, and LG currently start from around 350 to 400 pounds and come with manufacturer warranties of at least one year, sometimes two.

Frequently Asked Questions

Why is there still water sitting in the bottom of my dishwasher after a full cycle?

This is almost always caused by either a blocked filter assembly or a drain pump that isn't functioning properly. Start by cleaning the filter - both the cylindrical mesh and the flat plate beneath it. If the machine drains after that, the filter was the culprit. If standing water remains after a clean filter, the pump impeller may be jammed with debris, or the pump motor itself has failed. It's worth noting that a small amount of water in the very base of the sump is normal on many machines - it's there to keep the pump seal lubricated.

Can I fix a dishwasher drain fault myself or do I need an engineer?

Cleaning the filter, checking the drain hose for kinks, and clearing a blocked sink waste are all well within a homeowner's ability and take very little time. Beyond that, anything involving the pump, internal hoses, or electrical components is better handled by a qualified appliance engineer. Working inside a dishwasher without isolating the water supply and mains power correctly carries real risk. If you're in Fareham and unsure about the nature of the fault, using the Voltrade GoFIX diagnostic tool first can help you decide whether a DIY fix is realistic before committing to a call-out fee.

How much does a dishwasher repair typically cost in Hampshire?

A standard call-out and diagnostic visit from an appliance engineer in Hampshire commonly costs between 60 and 90 pounds. A drain pump replacement, including parts and labour, typically runs between 80 and 150 pounds depending on the brand and model - Bosch and Miele parts tend to be at the higher end, while Beko and Hotpoint are generally more affordable. A door seal replacement usually costs between 40 and 80 pounds fitted. For any repair costing more than 200 pounds on a machine over eight years old, it's worth asking the engineer to compare that against a like-for-like replacement cost before you commit.