Tuya Intermittent Wi-Fi Connectivity

Thermostat frequently disconnects from Wi-Fi and appears offline in the Tuya app, then reconnects later

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Possible Causes

Weak or unstable Wi-Fi signal, Router channel congestion, Power-saving features on router affecting IoT devices, Overheating Tuya Wi-Fi module

How to Fix / Troubleshooting

Safety first: No need to open the thermostat for network troubleshooting.

Steps to troubleshoot:

  • Check Wi-Fi signal strength at the thermostat location using a smartphone; aim for at least -65 dBm or better.
  • Change the router’s 2.4 GHz channel to a less congested one (1, 6, or 11) and disable band steering if it confuses 2.4 GHz-only devices.
  • Assign a static IP to the thermostat in the router’s DHCP settings to reduce reconnection issues.
  • Ensure the router’s power-saving or client isolation features are disabled for IoT devices.
  • If the thermostat is installed in a metal box or near large metal objects, relocate it or improve Wi-Fi coverage with an extender.
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Repair Difficulty

Very Easy 1/5

Required Part

Tuya Wi-Fi Module (on Thermostat PCB)
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