Applicable Systems
FC-302
FC-301
Symptoms
No serial communication signal on drive communication card option. Only active when P804 (bus timezone function) is not OFF.
Possible Causes
- HPFB bus timeout
Troubleshooting Steps
- Step 1: Check communication card and cable; verify P803/P804 settings.
Fault resolved after action
How to Reset
Reset by: 1) Correct the fault condition. 2) Press RESET button or cycle power. 3) Verify fault does not recur.
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Source: Danfoss VLT 2800 Manual (sinodrive.com)
Category: Electrical
Published: 2026-10-15
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