Do you have questions about your coffee equipment? Here you'll find the most important answers regarding function, care, and sustainable use of our devices.

Fellow Ode Brew Grinder

In rare cases, the grinder may vibrate and produce a knocking noise during grinding. This is due to rapid motor power fluctuations between 0% and 100%, which prevent the auto-off function from triggering properly. This is a known but extremely rare issue. If you are affected, please contact us.

If the grinder emits an SOS signal or no more beans are coming through, the grinder may be blocked. In this case, it's usually not a defect, but rather a blockage that you can fix yourself. Watch this video from the manufacturer: Link

A certain amount of residue (up to 1 g) is normal with the Ode and is caused by static electricity. To counteract this, we recommend using the integrated "Grind Knocker" or applying the so-called "Ross Droplet Technique," which involves adding a drop of water to the beans before grinding.

If the magnet on the bottom of the collection container becomes loose, it can be replaced with a spare part . Please do not replace the entire grinder in this case.

In this case, please contact our support so that we can help you quickly.

In very rare cases, the auger (part of the grinder) sits too tightly on the motor shaft. This makes it difficult to change the setting. If the auger is difficult to remove and the grinding setting barely differs between 1 and 11, please contact our customer service directly.

If the lid on top of the hopper is wobbly or warped, this may be due to material deformation. In this case, the entire grinder doesn't need to be replaced – we're happy to help with a replacement lid. Please contact us with your proof of purchase and serial number.

Fellow Opus

In most cases, a blockage occurs when the burrs and motor are still moving, but no coffee grounds are dispensed . Dark roasted, oily beans encourage residue to build up. We recommend regularly removing the outer burr and thoroughly cleaning the grinder - ideally weekly for dark roasts. You can also use the bean hopper lid as a bellows to loosen residue after grinding. If the burrs and motor no longer move , there is a blockage - in this case, the appliance should not be used any further. A true blockage will, in rare cases, lead to a breakage of the rotor and require the grinder to be replaced.

Fellow Stagg ECG and Corvo

The message "No water" appears when the kettle is empty - but occasionally also incorrectly, for example if the kettle or the connecting part has come into contact with water (e.g. through immersion or wet cleaning).

Here's how to proceed:
1. Remove the lid and place the kettle upside down on a clean cloth for 2-3 daysdo not place it on the base .
2. Leave the base separate during this time so that both parts can dry completely.

If the problem persists, please contact our support with your serial number and proof of purchase.

If the temperature display deviates significantly (more than 2 °C) from the set target temperature or jumps irregularly, this is often due to limescale deposits around the temperature sensor (thermistor) .

Recommended solution: Descale the kettle with citric acid or a suitable descaling agent. Make sure to thoroughly clean the interior to completely remove any deposits.

If the temperature fluctuations continue, replacing the kettle (without the base) may be advisable. Please have your proof of purchase and serial number ready and contact our support team.

Fellow Stagg ECG Pro

If the screen shows lines or the text is distorted, a simple reset often helps:

- Unplug the base and wait a few seconds before reconnecting it.
- Alternatively: Try a different socket.

If the issue persists, the base can be replaced with a spare part from our inventory, if available. Please have the model name and purchase date available when contacting support.

If your EKG Pro doesn't heat the water, the temperature sensor (thermistor) is most likely defective. In this case, the kettle will need to be replaced; the base will usually still work .

In this case, please contact our support with the model name and proof of purchase to arrange an exchange.

Boilovers can occur at higher altitudes because the boiling point is lower there . At an altitude of 1,500 m, for example, it is only about 95 °C instead of 100 °C. If the ECG is set to a target temperature that is too high, the water can boil over.

Here's how to proceed:
1. Determine the altitude of your location and set an appropriate target temperature.
2. Do not fill the kettle above the mark .
3. You can find further information in the “Boiling Point Table” in the manual or from our support.

Fluctuating temperatures (more than ±2 °C/°F) often indicate limescale deposits around the thermistor .

Please descale the kettle with a suitable agent (e.g. citric acid).

If the problem persists, the kettle can be replaced without the base.

If the display remains dark or the kettle does not respond, please check the following:
- Make sure the base is plugged in (the Fellow logo should light up briefly).
- Simply tap the dial to turn it on – no need to hold it.
- Try a different outlet or unplug the device for a few seconds to reset it.

If the base still doesn't respond, it can be replaced—if available. Please have the model name and proof of purchase ready.

If the temperature unit cannot be changed using the switch on the back of the base, there is a defect. In this case, the base must be replaced .

Please contact support with proof of purchase and model name.

Yes – regardless of the problem, we recommend checking the following points:

1. Perform a firmware update: Connect your EKG Pro to the Fellow app and make sure the latest firmware is installed.

2. Start calibration: On the device, go to

Menu → General → Calibration

and follow the instructions on the display.

Fellow Aiden

In rare cases, this message may appear even when there is enough water. In most cases, this is due to a blockage in the water line—but this can often be resolved with just a few steps:

In your Aidens menu, go to

Settings → Maintenance → Flush

(Note: This feature is available starting with firmware version 1.4.16. If you have an older version, connect your Aiden to the "Fellow – Brew with Aiden" app and leave the device connected to the internet for at least 24 hours for the update to install automatically. If you need help establishing the connection, please refer to this article from the manufacturer: Link )

After flushing, your Aiden displays one of the following messages:

"Flush complete" → The message was probably caused by a slight blockage – your Aiden should now be working again.

"Flush failed" → In this case, a look at the measured ml/second helps:

Less than 4.5 ml/s:

Descaling with liquid descaler. If the "Refill water" message appears again, let the descaling solution work for 5 minutes and then restart the process. It may take several cycles to remove all residue. If you need help descaling your Aiden, please refer to this article from the manufacturer: Link )

0.0 ml/s, but water flows visibly:
The line is probably still partially blocked. Repeat the flush 1-2 times . If the result remains the same, please contact our support team – we will investigate your warranty claim.

0.0 ml/s and no water flow:
Please submit a warranty claim directly.

If you need support with any of the steps, our team will be happy to help you.

Fellow Atmos

If your Atmos container no longer maintains the vacuum as usual, it could be due to dust or residue in the valve. In many cases, this can be easily fixed yourself:

How to clean the vacuum valve:

  1. Remove the seal that runs around the lid.
  2. Remove the paper filter and the metal filter .
  3. Find the small slot for the pressure valve inside the lid.
  4. Blow vigorously into the valve to remove dust or fine particles. Compressed air works even better.
  5. Reinsert the paper filter first, then the metal filter.
  6. Replace the seal and close the Atmos lid.

These steps will resolve the issue in most cases. If the lid still fails to create a vacuum, the lid can be replaced with a spare part from our inventory.
A complete replacement of the Atmos container is not necessary.

If your Fellow Atmos is irreparable, please contact us with your Atmos purchase receipt and serial number.

Fellow Carter

Discoloration on the exterior is sometimes caused by residue in the dishwasher, especially during the hot-dry cycle. This residue can burn into the coating. We recommend cleaning the carter again— this time without a hot wash or dry cycle . In many cases, the discoloration can be removed this way. Also, make sure the dishwasher is clean.

An unpleasant odor can occur if coffee residue or oils collect under the silicone seal on the lid - especially if the cup is stored with the lid closed.

Please remove the seal, clean it and the lid thoroughly, and let the carter dry and store without the lid in the future.

If your Carter is leaking, the silicone seal in the lid may be missing - it can occasionally come loose or get lost.

If available, we'll be happy to send you a replacement seal from our stock. In this case , you don't need to replace the entire cup —just replacing the seal is sufficient.

Fellow Prismo

The small yellow valve in the center of the Prismo is a key component that builds pressure during brewing. If this valve is damaged or missing, the Prismo will not function as intended. The good news: The valve is replaceable .

If you've lost the valve or it's no longer closing properly, please contact us. If available, we'll send you a replacement valve from our stock.

Please note: In this case, the Prismo does not need to be completely replaced – the valve can be replaced separately.

Acaia scales

If the scale displays unstable or incorrect readings without a load, there may be various reasons for this – for example, environmental disturbances , a firmware update that has not been carried out, or sensor deviations .

Please follow the steps below:

1. Check firmware update:
Make sure your scale is up to date.
– Connect them via the Acaia app (iOS/Android)
– Navigate to Settings → Firmware Update
– Follow the instructions in the app to install the latest version.

This video tutorial from the manufacturer also serves as a helpful resource: Link

2. Recalibrate the scale:
– Place the scale on a flat, solid surface (not on wood or soft materials).
– Perform the calibration according to the Acaia instructions using a 100 g or 500 g calibration weight .

Here again there is help and also a video tutorial from the manufacturer: Link .

3. Eliminate interference in the environment:
– Keep away from magnetic objects (e.g. stirring rods or metal drippers with magnetic bases).
– Check whether the scale is being disturbed by nearby electronic devices (e.g. induction hobs).

4. Perform a reset:
– Turn off the scale
– Press and hold the power button for about 10 seconds to fully reset it.

If the display remains irregular after these steps, please contact our support team – we will be happy to help you.

Do you still need help?

Then just send us a message! We'll be happy to help.