The short answer
A Costway compact dishwasher that stalls or runs forever is usually waiting for water or for temperature it cannot get. On a tap-connected machine, the tap being turned down or the adapter partly seated produces exactly this, and a cold fill lengthens the cycle without any error at all.
What you are actually seeing
- The cycle stops partway with water inside — Means: on-page
- The cycle runs far longer than its stated time — Means: on-page
- The machine pauses at the same point every time — Means: on-page
- The display counts down and then stops moving — Means: on-page
- The machine restarts its cycle from the beginning — Means: on-page
- The machine never starts at all — Means: different-fault — Go to: costway-dishwasher-wont-start
- The cycle completes but water remains — Means: different-fault — Go to: costway-dishwasher-drainage-failure
- Body: Match what you see before you take anything apart. The cycle stops partway with water inside. The cycle runs far longer than its stated time. The machine pauses at the same point every time. The display counts down and then stops moving. The machine restarts its cycle from the beginning. Some near-miss symptoms belong on a different page: The machine never starts at all points at a supply or door fault, covered on costway-dishwasher-wont-start; The cycle completes but water remains points at a drain fault, covered on costway-dishwasher-drainage-failure.
Causes, ranked for this machine
- The tap is turned down or off, or the adapter is only partly seated — Why this rank: First because the machine is waiting for a fill it cannot complete, and the tap is under owner control on every single use
- A cold fill, so the control waits indefinitely for a temperature it reaches very slowly — Why this rank: This produces a cycle that runs for hours with no error, which is the most confusing version of this fault
- An empty or under-filled internal tank on a tank-fill machine — Why this rank: Free to check and it stops the cycle exactly as a closed tap would
- A restricted drain, so a drain step cannot complete — Why this rank: Ties this fault directly to the drain hose position and the filter
- A failed valve, sensor or control board — Why this rank: Last because it needs a part and everything above it is free
- Body: Ranked for a countertop or portable dishwasher that connects to the kitchen tap with a quick-connect adapter or fills from an internal tank, and drains through a hose into the sink. Most likely: The tap is turned down or off, or the adapter is only partly seated. First because the machine is waiting for a fill it cannot complete, and the tap is under owner control on every single use. Next most likely: A cold fill, so the control waits indefinitely for a temperature it reaches very slowly. This produces a cycle that runs for hours with no error, which is the most confusing version of this fault. Third: An empty or under-filled internal tank on a tank-fill machine. Free to check and it stops the cycle exactly as a closed tap would. Fourth: A restricted drain, so a drain step cannot complete. Ties this fault directly to the drain hose position and the filter. Fifth: A failed valve, sensor or control board. Last because it needs a part and everything above it is free.
What to check, in order
- Check the tap is fully open and the adapter is fully seated
- Run the hot tap first so the machine starts with hot water
- Fill the internal tank to its marked level on a tank-fill machine
- Check the drain hose position and clean the filter
- Body: Each check rules out the causes above it. First, check the tap is fully open and the adapter is fully seated. Second, run the hot tap first so the machine starts with hot water. Third, fill the internal tank to its marked level on a tank-fill machine. Fourth, check the drain hose position and clean the filter.
Checks you can safely make yourself
- Turn the tap fully on and check the adapter is seated square and tight before starting — Tools: none — Time estimate: a few minutes
- Run the hot tap until hot, connect and start a normal cycle, and watch whether it progresses normally — Tools: none — Time estimate: one cycle
- Fill the internal tank to its marked level with hot water before starting — Tools: jug — Time estimate: a few minutes
- Hook the drain hose correctly over the sink edge and clean the filter, then run a short cycle — Tools: brush, gloves — Time estimate: half an hour
- Write down the elapsed time and the displayed step at which the machine stalls — Tools: notepad — Time estimate: one cycle
- Body: Checks an owner can make with the machine unplugged or by watching a short cycle. Step one: Turn the tap fully on and check the adapter is seated square and tight before starting. Tools: none. Time: a few minutes. Step two: Run the hot tap until hot, connect and start a normal cycle, and watch whether it progresses normally. Tools: none. Time: one cycle. Step three: Fill the internal tank to its marked level with hot water before starting. Tools: jug. Time: a few minutes. Step four: Hook the drain hose correctly over the sink edge and clean the filter, then run a short cycle. Tools: brush, gloves. Time: half an hour. Step five: Write down the elapsed time and the displayed step at which the machine stalls. Tools: notepad. Time: one cycle.
Safety first
Safety
Unplug the machine before removing the filter or reaching into the base, and do not open the door on a stalled machine full of hot water. Turn off the tap before disconnecting the adapter. Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. unplug-before-service
Where the owner fix ends
Call a technician, or claim under warranty, when the tap is fully open, the adapter is seated, hot water is used, the tank is filled and the drain is clear, and the cycle still stalls at the same point. The remaining causes are inside the machine.
Nearest pages of the same kind
Generalized information
This page is generalized across the Costway dishwasher line. Countertop machines with an internal tank, countertop machines on a tap adapter and rolling portable machines share the ranking above but not every part, and this page does not cover a specific model or control revision. Family- and model-specific pages, where they exist, are linked below.
Links: - [Common COSTWAY Dishwasher Problems](/blog/costway-dishwasher-problems) - [COSTWAY Dishwasher: Abnormal Noise or Vibration](/blog/costway-dishwasher-abnormal-noise) - [COSTWAY Dishwasher: Does Not Clean or Dry](/blog/costway-dishwasher-cleaning-performance) - [COSTWAY Dishwasher: Controls, Display or Error Code](/blog/costway-dishwasher-control-fault)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
