- Check that the water tap feeding the dishwasher is fully open.
- Make sure the inlet hose is not kinked, twisted, or trapped behind the appliance.
- Turn off the water supply and power, then inspect and clean the inlet hose filter at the tap connection.
- Reconnect everything securely and run a fresh programme.
AEG groups c1 with water inlet problems. The dishwasher cannot reach the required fill level in time, which usually points to supply, pressure, hose, filter, or installation issues.
- The dishwasher stops and shows c1 near the start of the cycle.
- Little or no water enters the tub.
- The machine may beep once, flash a warning, or drain before showing the fault.
- Water tap is closed or household pressure is too low.
- Inlet hose is kinked, twisted, trapped, or damaged.
- The inlet hose filter is clogged with debris or limescale.
- The water inlet family can also appear if the drain route or sink connection was set up incorrectly.
- Open a nearby tap and confirm there is normal water flow in the home.
- If several appliances are using water at once, test the dishwasher again when demand is lower.
- Use the pressure check from AEG support: one tap should fill a 5-litre bucket in about 30 seconds.
- Inspect the inlet hose. If it is bent, twisted, or damaged, stop and arrange repair.
- Clean the inlet hose filter, reconnect the hose, and rerun a programme.
- Check the drain hose routing and sink connection, especially if the dishwasher was recently installed or moved.
| Checkpoint | What to confirm | Good result | If it fails |
|---|---|---|---|
| Water supply | Tap is fully open and household water flow is normal | Dishwasher fills | Investigate supply or low pressure |
| Pressure check | A 5-litre bucket fills in about 30 seconds | Pressure is adequate | Water pressure is too low for normal fill |
| Inlet hose and filter | Hose is straight and inlet filter is clean | Water enters normally | Clean filter or replace damaged hose |
| Drain and install setup | Drain hose height and sink connection are correct | Programme runs normally | Correct hose routing or remove blanking plug |
- Resetting the dishwasher repeatedly without checking the water tap or inlet hose first.
- Cleaning the tub filters but forgetting the small inlet filter at the water connection.
- Overlooking installation issues after moving or fitting the machine.
- Do not continue running the dishwasher if the inlet hose is damaged.
- Do not remove hoses while the water supply is still on.
- Turn off the water supply and isolate power before removing the inlet hose or filter.
- If the hose is damaged, repair by an approved service provider is safer than continued use.
Book service if c1 returns after the official supply, pressure, hose, filter, drain, and installation checks, or immediately if the inlet hose is damaged.
- Keep the inlet filter free from scale and debris during routine maintenance.
- Avoid trapping or sharply bending the inlet and drain hoses when pushing the dishwasher back into place.
- After installation work, recheck the sink connection and hose routing before first use.
Does c1 always mean the water tap is closed?
No. This family also covers low pressure, a kinked hose, a blocked inlet filter, or installation issues.
Can low water pressure really trigger this fault?
Yes. If one tap cannot fill a 5-litre bucket in about 30 seconds, household pressure may be too low for the dishwasher to fill correctly.