Thermostat displays C003 and voice assistant integration (e.g., Cortana/Alexa/Google) fails to respond or link.

Safety: This is a software/service issue; no electrical work is required.

• Step 1 – Confirm internet and cloud status: Ensure GLAS can reach the cloud (no C002 error). Verify your home internet is stable.
• Step 2 – Update firmware: On the GLAS touchscreen, go to Settings > Device > Software Update and install any available updates. Reboot after updating.
• Step 3 – Relink voice account: In your voice assistant app, remove/unlink the GLAS thermostat skill/integration. Then re‑add it, sign in with the correct GLAS/Microsoft account, and grant all requested permissions.
• Step 4 – Check region and language: Ensure GLAS and your voice assistant are set to compatible regions and languages that support thermostat control.
• Step 5 – Clear and re‑add device: In the voice assistant app, delete the GLAS device, then rediscover devices.
• Step 6 – Factory reset (last resort): If C003 persists, back up your schedule/settings, then perform a factory reset from the GLAS settings menu and set up the thermostat and voice integration from scratch.