114
Ariston
Real-Time Clock / Backup Power Failure
Error 114; thermostat time and schedules keep resetting or are incorrect after power cuts.
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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 internal backup battery or supercapacitor, Firmware bug affecting time sync, No internet time synchronization, Power supply instability
How to Fix / Troubleshooting
Safety: Turn off power before opening the thermostat housing.
- Enable NTP sync: If the thermostat is online, enable automatic time synchronization with internet time servers in the settings.
- Check power stability: Ensure the thermostat is powered from a stable 230 V supply or 24 V transformer as specified. Loose connections at the backplate can cause resets; retighten terminals.
- Inspect internal backup cell: Some models have a small backup battery or supercapacitor on the PCB. If user-replaceable, follow the manual to replace it with the exact type.
- Firmware update: Apply any available firmware updates that mention clock or schedule fixes.
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Repair Difficulty
Medium
3/5
Required Part
Ariston Thermostat Backup Battery/Supercapacitor
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