Machine brews only hot water on cold setting
Nescafé Dolce Gusto
Temperature control / valve logic fault
When the lever is moved to cold, the machine still dispenses hot 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
Faulty temperature sensor, Control board logic error, Stuck heater relay, Incorrect wiring after repair
How to Fix / Troubleshooting
Safety: Beware of hot water when testing cold mode.
- Power reset: Unplug for 10 minutes, then plug in and test again.
- Descale: Perform a descaling cycle to ensure accurate temperature sensing.
If cold mode continues to produce hot water, the control board or sensor is malfunctioning. This requires internal diagnostics by a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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