The short answer
On a countertop Blitzhome dishwasher, standing water at the end of a cycle is almost always a drain-hose problem rather than a failed pump. The machine drains through a light hose you place in the sink yourself, so hose height, kinks and a plugged sump screen outrank every electrical cause. This is an owner fix in most cases.
What you are seeing
- A pool of dirty water in the bottom of the tub when the cycle ends
- The pump is clearly audible but nothing arrives at the sink
- Water drains part way, then stops with the sump still covered
- Water returns to the tub minutes after a successful drain
- A near-miss symptom: the tub is dry but dishes are wet, which is a drying fault, not a drain fault
- A near-miss symptom: water on the counter rather than in the tub, which belongs on the leak page
- Body: Look at what is actually in the tub and where it stops: A pool of dirty water in the bottom of the tub when the cycle ends. The pump is clearly audible but nothing arrives at the sink. Water drains part way, then stops with the sump still covered. Water returns to the tub minutes after a successful drain. A near-miss symptom: the tub is dry but dishes are wet, which is a drying fault, not a drain fault. A near-miss symptom: water on the counter rather than in the tub, which belongs on the leak page.
Causes, most likely first
- The drain hose end sits too high or has fallen out of the sink — Why: a countertop unit lifts water only a short way, so a hose draped over a tall faucet neck or lying above the tub line stalls the pump.
- A kink or a tight loop in the flexible hose — Why: the supplied hose is thin-walled and takes a set where it is coiled for storage, and one flat spot is enough to stop flow.
- Food debris over the sump screen — Why: these machines have a small flat filter and no disposal, so a single label or a piece of foil blocks the intake completely.
- A siphon back from the sink — Why: if the hose end is submerged in standing sink water, the tub refills as soon as the pump stops.
- A blocked or trapped drain pump impeller — Why: a fruit stone or cutlery washer can reach the impeller because the filter area is small.
- A failed drain pump — Why: possible, but it ranks last here because the pump runs only briefly per cycle and the hose faults above account for most cases.
- Body: Ranked for this machine, where the drain path is external and unsupported: First, The drain hose end sits too high or has fallen out of the sink: a countertop unit lifts water only a short way, so a hose draped over a tall faucet neck or lying above the tub line stalls the pump. Second, A kink or a tight loop in the flexible hose: the supplied hose is thin-walled and takes a set where it is coiled for storage, and one flat spot is enough to stop flow. Third, Food debris over the sump screen: these machines have a small flat filter and no disposal, so a single label or a piece of foil blocks the intake completely. Fourth, A siphon back from the sink: if the hose end is submerged in standing sink water, the tub refills as soon as the pump stops. Fifth, A blocked or trapped drain pump impeller: a fruit stone or cutlery washer can reach the impeller because the filter area is small. Sixth, A failed drain pump: possible, but it ranks last here because the pump runs only briefly per cycle and the hose faults above account for most cases.
What to check, in order
- lift the hose end out of the sink and hold it below the top of the tub, then run a drain or rinse cycle; if it clears, the fault was head height, not the pump.
- run your hand along the whole hose looking for a flat or folded section, since the hose is the only part of the drain path that moves.
- open the tub and clear the sump screen by hand, which is the next most likely restriction and takes seconds.
- listen at the base while the drain runs: a pump that hums without moving water points at the impeller, and a pump that is silent points at power or control, which is where the owner checks stop.
- Body: Work the path from the sink back towards the machine, because that is the order of likelihood: First, lift the hose end out of the sink and hold it below the top of the tub, then run a drain or rinse cycle; if it clears, the fault was head height, not the pump. Second, run your hand along the whole hose looking for a flat or folded section, since the hose is the only part of the drain path that moves. Third, open the tub and clear the sump screen by hand, which is the next most likely restriction and takes seconds. Fourth, listen at the base while the drain runs: a pump that hums without moving water points at the impeller, and a pump that is silent points at power or control, which is where the owner checks stop.
Checks you can do yourself
- Unplug the dishwasher and empty the standing water with a cup and a sponge so you can see the sump — Tools: cup, sponge, towel — Time estimate: a few minutes
- Twist out the flat filter over the sump, rinse it under the tap and clear the screen holes with a soft brush — Tools: soft brush, dish soap — Time estimate: a few minutes
- Straighten the drain hose along its whole length and remove any coil, then hang the end over the sink rim below the level of the tub — Tools: none — Time estimate: a few minutes
- Make sure the hose end is above any standing water in the sink so the machine cannot siphon back — Tools: none — Time estimate: a few minutes
- Plug the machine back in and run the shortest cycle with an empty tub, watching the sink for a steady flow — Tools: none — Time estimate: half an hour or so
- Body: These checks are safe with the machine unplugged unless a step says otherwise: Unplug the dishwasher and empty the standing water with a cup and a sponge so you can see the sump (cup, sponge, towel; a few minutes). Twist out the flat filter over the sump, rinse it under the tap and clear the screen holes with a soft brush (soft brush, dish soap; a few minutes). Straighten the drain hose along its whole length and remove any coil, then hang the end over the sink rim below the level of the tub (none; a few minutes). Make sure the hose end is above any standing water in the sink so the machine cannot siphon back (none; a few minutes). Plug the machine back in and run the shortest cycle with an empty tub, watching the sink for a steady flow (none; half an hour or so).
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. A countertop dishwasher is a plug-in appliance sitting next to a sink, so keep the plug and the outlet dry, never bail water towards the cord, and do not run the machine with the base panel removed. Stop at the point where a check needs a meter on live terminals. unplug-before-service
When to stop and call a technician
The line here is straightforward: The pump hums but moves nothing after the filter and hose are clear, which means the impeller or the pump itself. The pump is silent during the drain step, which points at the control board or its wiring. Water is standing and the machine also trips the outlet or the breaker. The tub refills on its own with the machine off, which is a fill-valve fault rather than a drain fault. The pump hums but moves nothing after the filter and hose are clear, which means the impeller or the pump itself The pump is silent during the drain step, which points at the control board or its wiring Water is standing and the machine also trips the outlet or the breaker The tub refills on its own with the machine off, which is a fill-valve fault rather than a drain fault
Nearest pages of the same kind
What this page does not cover
This page is generalized across every dishwasher sold under the Blitzhome name: it separates neither the countertop machines from the tank-fill models and the portable units that connect to a faucet, and it names no individual model. Where a family- or model-specific page exists it is linked here and it outranks this one for that machine; at present no page beneath this one narrows to a single family, so treat the ranking above as the brand-level pattern rather than a reading of your serial plate. For the other faults that turn up on this machine, start from Common Blitzhome Dishwasher Problems.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
