Display shows 'No' or 'No Conn'; thermostat cannot be controlled from the Ally app and ignores remote schedules.

Safety first: No hazardous voltages are involved for battery thermostats.

Steps:

• Check gateway: Confirm the Ally Gateway has power and is connected to your router. Verify internet access on your phone.
• Move gateway: Place the gateway centrally in the home, away from thick walls, metal cabinets, and large appliances.
• Re‑pair thermostat: Put the thermostat into pairing mode and add it again in the Ally app. Ensure you remove any old entries first.
• Add repeaters: If the thermostat is far from the gateway, consider adding a mains‑powered Zigbee device (e.g. a compatible smart plug) as a repeater between them.
• Check for interference: Avoid placing Wi‑Fi routers directly next to the gateway; if possible, change Wi‑Fi or Zigbee channels to reduce overlap.