Technivorm Moccamaster
Stuck Hotplate Thermostat / Incorrect Thermostat Rating
Hotplate overheats, causing coffee to scorch or burn quickly
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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
Failed hotplate thermostat stuck closed, Incorrect replacement thermostat installed, Bypassed or shorted thermostat wiring, Faulty hotplate control circuit (on models with electronic timer)
How to Fix / Troubleshooting
Safety: Unplug the unit and allow it to cool. Overheating surfaces can cause burns and fire risk.
- Observe behavior: If the hotplate becomes extremely hot (coffee boils or burns within minutes), the thermostat is likely not regulating temperature.
- Internal inspection (advanced):
- Remove the bottom cover.
- Locate the hotplate thermostat attached to or near the hotplate.
- Check for signs of tampering or bypassed wiring (e.g., wires connected directly, bypassing the thermostat).
- Verify part: If the thermostat was recently replaced, confirm its temperature rating matches the original Moccamaster specification.
- Replace thermostat: If suspected faulty, replace the thermostat and restore wiring to the original configuration.
- Test: Reassemble and run a brew cycle, then monitor hotplate temperature over 30–60 minutes.
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Repair Difficulty
Hard
4/5
Required Part
Hotplate Thermostat
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