Thermal fuse on the pump for DeLonghi ESAM coffee machines

What is a pump thermal fuse

The thermal fuse is a protective element located directly on the pump or near it. Its job is to cut off power to the pump if the temperature exceeds a safe limit, thereby preventing damage to the pump motor or the risk of fire.

Signs of a fault

Unlike ordinary wear parts, a thermal fuse does not wear out gradually – it either works, or it is permanently interrupted due to overload or overheating. When this happens, the pump stops working completely: the coffee machine fails to draw water, does not heat up, may show an error message related to water flow or pressure, or the machine stops brewing coffee altogether.

When it's time for a replacement

If the fuse is blown, the pump receives no power regardless of its own condition. Replacing the fuse restores the pump's function, provided the pump itself has not been damaged by another cause that led to the overheating.

How to choose the right part

• Check compatibility in the product table according to your coffee machine model.
• If the fuse blows repeatedly, we also recommend checking the condition of the pump itself and the water circuit.

Compatible with

• ESAM6700 EX:1 PrimaDonna Avant
• ESAM04.320.S Magnifica
• ESAM04.350.S Magnifica
• ESAM3550.B Pronto Cappuccino
• ESAM3600.S Magnifica Elegance
• ESAM4506 Magnifica
• ESAM5400 EX:1 Perfecta
• ESAM5400.BW Perfecta