MAC-558/559 LED 1 flashes 0.5 sec alone — Server/AP comm failed, Heat Pump comm failed

What does MAC-558/559 LED 1 0.5 sec interval, LED 2 OFF, LED 3 OFF mean?

On MAC-558/559 models, a rapid flash of only LED 1 (0.5 seconds) indicates that communication has failed with both the server/access point and the Heat Pump. This is a comprehensive communication failure.

• Complete loss of network connectivity (both local and internet).
• Failure in connection between the Wi-Fi interface and the Heat Pump.
• Serious fault with the Wi-Fi interface itself.

Click steps to track your progress.

1. 1

   Restart your home router and the Wi-Fi interface.

2. 2

   Check all physical connections of the Wi-Fi interface to the Heat Pump unit.

3. 3

   Attempt to re-pair the Wi-Fi interface to your home Wi-Fi network.

4. 4

   If the issue persists, perform a factory reset of the interface and re-add it as a new unit.