Temperature and taste: too hot, too cold or inconsistent

The group head does not get hot

• E61 groups need 15–20 minutes. Wait before you start troubleshooting.
• There may be air in the thermosiphon. Run a cup of water through the group and let the machine heat up again.
• Limescale in the thermosiphon pipes stops the circulation. This requires a service.

The espresso is too hot, bubbly or bitter

On heat exchanger machines: do a cooling flush before you brew. On PID machines: lower the temperature by 1–2 degrees. Very fresh coffee (less than a week after roasting) also bubbles more.

The espresso is too cold

• Preheat your cups, ideally on the cup warmer or with hot water.
• You are flushing too much. Only flush until it stops hissing.
• The group has not finished warming up.

The temperature varies a lot

• Heat exchanger machines vary more than dual boilers. A consistent routine (the same cooling flush every time) gives the most consistent results.
• On machines with a pressurestat, you can have a technician adjust the boiler pressure.
• Limescale in the boiler reduces heating performance. Check your water hardness.

Can't find the fault? Contact us with the model, serial number and a short description, ideally with a video. We will help you find the right spare part or a service technician.