Riello Sentinel Dual Error F55: Waiting for load reduction to return to inverter

Riello Sentinel Dual UPS · taken from the manufacturer’s manual, pages cited

Fault codeF55

The system is waiting for the load to reduce and return to normal inverter operation. The manual lists no action for this code.

Model
Riello Sentinel Dual
Display shows
Waiting for load reduction to return to inverter (F55)
Type
Fault code
Source
Manual p. 28

What F55 means

Waiting for load reduction to return to inverter p. 28

Common causes

  • Waiting for load reduction to return to inverter p. 28

If F55 is still not resolved

  • contact service / dealer p. 18
    “In order to optimise performance, in ECO mode, the load is normally powered by the bypass.”
Open the manual at page 28 All Sentinel Dual error codes Manual details & download

This page summarises what the manufacturer’s manual says about F55; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Riello. Found a mistake? Report an error.