Thermostat loses connection to Fibaro controller intermittently

Safety first: No electrical work is required.

Steps to improve connectivity:

• 1. Check signal strength:
  • Use the Fibaro controller diagnostics to view signal quality for the thermostat.
• 2. Add repeaters:
  • Install additional powered Z‑Wave devices (e.g., Fibaro relays) between the controller and thermostat to strengthen the mesh.
• 3. Relocate controller or devices:
  • Move the controller or nearby repeaters to reduce obstacles like thick walls or metal objects.
• 4. Reduce interference:
  • Keep high‑power Wi‑Fi routers or cordless phone bases a short distance away from the thermostat.
• 5. Network heal:
  • Run a Z‑Wave network heal/optimization from the controller to rebuild routes.

When to call a professional: For large or complex installations, a Fibaro integrator can perform RF surveys and optimize device placement.