- Appliances
- Dishwashers
E01
Grundig E:01 on dishwasher: water overflow or leak warning
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
On Grundig GNFP4540, GNFP4630 and GNFP3441 dishwashers, the E:01 icon flashes when too much water enters the tub or a leak occurs in any part. Let the safety algorithm pump the water out; if E:01 stays on, turn off the tap, unplug the machine and call authorised service.
Safety first
Stop and check this first
- Always unplug the dishwasher and turn off the water tap before any cleaning or inspection, and never attempt to repair a permanent E:01 fault yourself.
- The WaterProtect+ hose set contains electrical connections and assemblies: never shorten or lengthen it with extension hoses, avoid water contact with the valve box, and if it is damaged unplug the dishwasher and call the authorised service agent.
Safe checks you can perform
- Allow the safety algorithm to discharge the water
- Turn off the water tap and unplug the dishwasher
- Visual check of inlet hose, drain hose and WaterProtect+
Leave these tasks to a qualified professional
- Do not attempt this professional task: Internal leak localisation and water intake inspection
- Do not attempt this professional task: WaterProtect+ inspection and full leak test cycle
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Internal leak localisation and water intake inspection
What they doThe Grundig authorised service agent opens the isolated appliance, locates the leaking internal part or the cause of excessive water inflow, and repairs or replaces the faulty component.
They must show youthe internal leak point or overfill source found inside the dishwasher and the part replaced.
In writingthe E:01 fault diagnosis, the part number of any replaced component and the reason for replacement.
WaterProtect+ inspection and full leak test cycle
What they doThe engineer inspects the WaterProtect+ inlet hose assembly without shortening or extending it, opens the tap completely (0.3 to 10 bar supply limits) to check for leaks, and runs a test wash.
They must show youthe dry hose connections with the tap fully open and a test cycle running without E:01 flashing.
In writingthe leak check result, the test programme completed without E:01 and the service date.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Allow the safety algorithm to discharge the water
- Who:
- you.
- How:
- when E:01 starts flashing on the program indicator, wait a few minutes without opening the door while the built-in safety algorithm operates and attempts to pump out the water inside the machine.
- Result that matters:
- checking whether the overflow stops and the safety procedure completes on its own.
- If the E:
- 01 icon turns off once the water is discharged: monitor the next wash cycle to make sure the warning does not return.
- If the E:
- 01 icon does not turn off: the manual states that the error is permanent, so proceed to isolating water and power.
- Evidence to keep:
- which programme was running when E:01 flashed and whether the drain pump stopped or kept running.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Turn off the water tap and unplug the dishwasher
- Who:
- you.
- How:
- if E:01 remains on screen, switch the dishwasher off, close the mains water inlet tap completely and unplug the power cord from the socket with dry hands.
- Result that matters:
- stopping any further water intake and isolating mains power before inspecting the area or waiting for service.
- If water has pooled on the kitchen floor near the plinth:
- mop it up only after the power plug has been disconnected.
- If the floor around the machine is dry:
- leave the tap closed and the plug disconnected while you check the visible hoses.
- Evidence to keep:
- photos of the E:01 display and any moisture or water marks around the base of the dishwasher.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Visual check of inlet hose, drain hose and WaterProtect+
- Who:
- you.
- How:
- with the dishwasher unplugged and the tap closed, inspect the visible water supply and draining hoses to confirm they are securely fastened and undamaged, and on models with WaterProtect+ check that the valve box at the hose inlet is dry and intact.
- Result that matters:
- spotting any external leak at the tap union or visible damage to the WaterProtect+ hose set.
- If the tap union is dripping or the WaterProtect+ assembly shows damage:
- keep the unit unplugged and report it to the authorised service agent.
- If all external hoses and connections are dry and intact:
- the leak or overfill is internal and requires a Grundig engineer.
- Evidence to keep:
- photos of the tap connection, the WaterProtect+ valve box and the visible drain hose run.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Grundig
- Product type
- Dishwashers
Known code variants
- Beko dishwasher E01 flashing
- Beko dishwasher E:01
- Beko dishwasher leak E01
- Beko dishwasher overflow warning
- Beko lavavajillas desbordamiento
- Beko lavavajillas E:01
- Beko lavavajillas fuga de agua E01
- E 01
- E01
- E1
- E:01
- E:1
- GNFP3441 E:01
- GNFP4630DW E:01
- Grundig dishwasher E:01
- Grundig E01
- Grundig E:01
- lavavajillas Beko E01 parpadea
- lavavajillas Grundig E:01
- Saeco abertura de café obstruida
- Saeco coffee funnel clogged
- Saeco compartimento café molido atascado
- Saeco E1
- Saeco error 01
- Saeco GranAroma error 01
- Saeco pre-ground coffee compartment blocked
- Saeco SM6580 error 01
- Saeco SM6580 error code 01
What it means
In the official user manuals for Grundig GNFP4540DWW, GNFP4630DWX, GNFP3441W and GNFP3441G dishwashers, a flashing E:01 icon on the program indicator is the water overflow warning triggered when excessive water flows into the appliance or a leak occurs in any part. While the overflow condition lasts, a safety algorithm runs automatically and tries to discharge the water. If the overflowing stops and the safety procedure finishes, the E:01 icon turns off; if E:01 does not turn off, the manual classifies it as a permanent error and instructs you to call service. The code alone never proves which specific component is defective.
Warnings and stop conditions
- Mediumsource verified
Always unplug the dishwasher and turn off the water tap before any cleaning or inspection, and never attempt to repair a permanent E:01 fault yourself.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
- Highsource verified
The WaterProtect+ hose set contains electrical connections and assemblies: never shorten or lengthen it with extension hoses, avoid water contact with the valve box, and if it is damaged unplug the dishwasher and call the authorised service agent.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Symptoms and causes
Probable causes · in order
- Excessive water flowing into the dishwasher tubCommon
Grundig's user manual lists too much water flowing into the machine as the first trigger for the flashing E:01 warning and its automatic drain routine.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
- Water leak in an internal part or hose connectionPossible
The manual identifies a leak in any part of the dishwasher as the second cause of E:01, keeping the safety algorithm active while water is detected.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
- Permanent fault or damaged WaterProtect+ hose assemblyPossible
If the E:01 icon does not turn off after the discharge attempt, or if the WaterProtect+ inlet protection system is damaged, Grundig requires calling the authorised service agent.
Evidence: Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100) · Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Virtual technician
Does E01 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Grundig Dishwasher User's Manual GNFP4540DWW / GNFP4630DWX (doc. 15 8755 0100)
Grundig · 2021 · manual
- 2
Grundig Dishwasher User's Manual GNFP3441W / GNFP3441G (doc. 15 7735 0100)
Grundig · 2023 · manual
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