On many Nespresso OriginalLine models, a steady red light appears and the machine does not brew

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed thermoblock heater, Blown thermal fuse, Faulty main PCB, Internal short detected by control

Safety first: Disconnect power and allow the machine to cool before opening.

User-level steps:

Unplug for 10–15 minutes, then plug back in to see if the red light clears.
Ensure the machine is descaled regularly; if not, perform a descale cycle (if the machine will allow it).

Technical steps:

Open the housing and test the thermoblock heater and thermal fuse for continuity.
Inspect the main PCB for burned components or damaged tracks.
If the heater and fuse are good, the fault is likely on the control board; replace the PCB.

Hard 4/5

Thermoblock Heater Assembly or Main Control PCB

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