F10
Ferroli
Real‑Time Clock / Backup Power Failure
Thermostat displays F10 and the date/time resets after every power loss; schedules are lost.
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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 internal backup battery or supercapacitor on thermostat PCB, Firmware bug affecting clock retention, Repeated power interruptions to thermostat receiver, Corrupted non‑volatile memory
How to Fix / Troubleshooting
Safety first: Low‑voltage electronics only.
- Stabilize power:
- Ensure the thermostat/receiver is on a stable circuit that is not frequently switched off.
- Reset and reconfigure:
- Perform a factory reset of the thermostat (note schedules first).
- Re‑enter date, time, and schedules.
- Check for firmware update:
- Use the Ferroli app or installer menu to update firmware, which may fix RTC bugs.
- If F10 continues and time is always lost:
- The internal backup cell or memory is likely defective.
- Replace the Ferroli smart thermostat main unit.
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Repair Difficulty
Medium
3/5
Required Part
Ferroli Smart Thermostat Main PCB
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