D12 Green LED lit — ERV Wheel Status Alarm

What does D12 Green LED mean?

This light indicates that the ERV wheel is not rotating when it should be. The system will signal an alarm.

• ERV wheel belt is broken or slipping
• ERV wheel motor has failed
• Proxy sensor has failed or is set incorrectly
• Wiring error

Click steps to track your progress.

1. 1

   Check the ERV wheel belt for damage or slippage.

2. 2

   Inspect the ERV wheel motor for signs of failure.

3. 3

   Verify the proxy sensor settings and its wiring.

4. 4

   Check all related wiring for errors.