34
Fieldbus communication fault
Danfoss · VLT HVAC-FC 102 Frequency Converter
What does 34 mean?
The fieldbus communication option card is not functioning or communicating correctly. This prevents the drive from receiving commands or sending status information to the connected control system, leading to loss of remote control and monitoring capabilities. Unresolved, this fault will halt automated operation.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Check fieldbus network parameters (e.g., baud rate, address, termination) in both the drive and the control system for correct configuration.
- 4
Perform a network diagnostic test from the fieldbus master if available.
Source: Danfoss VLT HVAC-FC 102 Frequency Converter
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