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Thomas EdwardsJul 27, 2025
What to do if my eQ-3 Thermostat shows error F4?
- TTaylor GloverJul 27, 2025
If your eQ-3 Thermostat displays the error code F4, ensure that the device is not connected to the Cube in the software and then reset the device. After resetting, you can attempt the teach-in procedure again.