Lavazza
No Heating / Underheating
Machine powers on but does not heat; coffee is dispensed cold or lukewarm.
Advertisements
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.
Advertisements
Possible Causes
Failed brew thermoblock heater, Faulty brew temperature sensor, Loose heater wiring, Control board heater drive failure
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow it to cool before opening.
Step 1 – Confirm symptom
- Run a hot-water cycle and measure the temperature at the outlet; it should be hot to the touch.
- If consistently cold, proceed to further checks.
Step 2 – Descale
- Perform a full descaling cycle; heavy scale can reduce heat transfer and cause temperature errors.
Step 3 – Internal inspection (advanced)
- Unplug and remove the cover.
- Check the thermoblock heater terminals and wiring for secure connections.
- Inspect for burn marks or damaged insulation.
Step 4 – Component testing (for technicians)
- Measure resistance of the heater and NTC sensor; replace if out of specification.
- If both are good, suspect a control board fault.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Brew Thermoblock
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements