How to Fix / Troubleshooting

Safety first: Isolate mains before opening mains-powered thermostats.

Set correct time: Manually set the time and date on the thermostat or via the Wiser app. Ensure the correct time zone is selected.
Check backup: On models with backup cells, inspect for leakage or failure. These may require replacement of the front module.
Use app/cloud time: For Wiser systems, ensure the HubR is online so that time is synchronised from the internet.
Stabilise power: If power cuts are frequent, consider fitting an uninterruptible power supply (UPS) to the router and HubR.

Thermostat time and schedules drift or reset after power cuts.

Possible Causes