Alarm codeUF451
52S not turned on, or turned on without any command when manual transfer causes a 52S abnormal. The manual's first action is: “CALL SERVICE ENGINEER”
- Model
- Mitsubishi Electric 2033 G Series
- Display shows
- 52S abnormal (UF451)
- Type
- Alarm code
- Source
- Manual p. 42
What UF451 means
52S abnormal p. 42
Common causes
- 52S not turned on, or turned on without any command when manual transfer p. 42
Safety warnings — read before you start
- DANGERWARNING 1. Lethal voltages exist within the equipment during operation. Observe all warning and cautions in this manual. Failure to comply may result in serious injury or death. p. 7
What to do
- CALL SERVICE ENGINEER p. 42
If UF451 is still not resolved
- Obtain a qualified service for this equipment as per instructions. p. 7 “Obtain a qualified service for this equipment as per instructions.”
This page summarises what the manufacturer’s manual says about UF451; 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 Mitsubishi Electric. Found a mistake? Report an error.