There is a short circuit on one or more utilities powered by the UPS. The manual's first action is: “Disconnect all the utilities, switch the UPS off and back on again, reconnect the utilities one at a time to identify which one is faulty.”
- Model
- Riello Sentinel Dual
- Display shows
- F53
- Type
- Fault code
- Source
- Manual p. 27
What F53 means
THERE IS A FAULT ON ONE OR MORE OF THE UTILITIES POWERED BY THE UPS p. 27
Common causes
What to do
- Disconnect all the utilities, switch the UPS off and back on again, reconnect the utilities one at a time to identify which one is faulty. p. 27
Before you service the product, read the safety instructions in the manual p. 26.
If F53 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.”
This page summarises what the manufacturer’s manual says about F53; 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.
