Machine brews only cold water on hot setting
Nescafé Dolce Gusto
Heating control failure
When the lever is moved to hot, the machine dispenses cold or room-temperature water.
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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
Open thermoblock heater, Faulty NTC sensor reading low, Heater relay failure on control board, Broken heater wiring
How to Fix / Troubleshooting
Safety: Unplug the machine before inspection.
- Check cold mode: Verify that cold mode works normally. If cold works but hot does not, the issue is isolated to the heating circuit.
- Descale: Perform a descaling cycle; in rare cases, heavy scale can affect heating, though usually some warmth is still present.
If water remains completely cold on hot setting after descaling, the thermoblock or its control electronics are likely faulty and require professional replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Thermoblock Heater
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