How to Fix / Troubleshooting

Safety first: No electrical work is required.

Update app: Install the latest version of the Worcester Bosch/Bosch smart heating app.
Check region and language: Ensure your account region matches the device's supported region.
Reset device to factory: Put the thermostat/gateway into factory reset mode as per manual, then retry onboarding.
Manual entry: If QR code is damaged, use manual serial number or pairing code entry if supported.
If still failing: Contact Worcester Bosch support to check if the device is already registered to another account or needs backend reset.

Thermostat cannot be added to the Worcester Bosch app during setup.

Possible Causes