Rancilio Reduced Heating Performance

Machine is very slow to heat up; takes much longer than usual to reach operating temperature.

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Safety Warning

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.

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Possible Causes

Partially failed heating element (dual element with one side open), Heavy scale on element reducing heat transfer, Low mains voltage, Faulty power relay cycling incorrectly

How to Fix / Troubleshooting

Safety: Unplug and allow the machine to cool before testing electrical components.

  • Verify mains voltage: Measure line voltage and ensure it matches the machine rating.
  • Descale boilers: Perform descaling on brew and steam boilers to remove insulating scale from the elements.
  • Test heating element: Some elements have multiple circuits. Measure resistance across each pair of terminals and compare to spec. Replace the element if one circuit is open.
  • Check relay operation: Listen for rapid or irregular clicking from the heater relay. Replace the control board if the relay is malfunctioning.
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Repair Difficulty

Medium 3/5

Required Part

Brew/Steam Boiler Heating Element
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