Danfoss Ally Intermittent Zigbee Connectivity

Thermostat frequently loses connection in the Ally app and then reconnects later; schedules sometimes fail to run.

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Possible Causes

Weak signal due to distance or walls, RF interference from Wi‑Fi or other Zigbee networks, Low battery in thermostat, Overloaded or poorly placed Ally Gateway

How to Fix / Troubleshooting

Safety first: No hazardous voltages for battery devices.

Steps:

  • Improve placement: Move the Ally Gateway to a more central, elevated position away from metal objects and thick walls.
  • Replace batteries: Ensure the thermostat has fresh batteries to maintain strong radio output.
  • Add repeaters: Install compatible Zigbee mains‑powered devices between the gateway and thermostat to strengthen the mesh network.
  • Channel optimization: If possible, change the Zigbee channel on the gateway to one with less overlap with your Wi‑Fi channels.
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Repair Difficulty

Easy 2/5

Required Part

Danfoss Ally Gateway
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