WARNING/ALARM 2
Live zero error
Danfoss · VLT HVAC Basic FC 101
What does WARNING/ALARM 2 mean?
The signal on one of the analog inputs is less than 50% of the minimum value programmed for that input. This condition is typically caused by broken wiring, a loose connection, or a faulty signal-sending device connected to the frequency converter's analog input.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Test the external device sending the analog signal to ensure it is functioning correctly and providing an adequate signal level.
Source: Danfoss VLT HVAC Basic FC 101
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