Alarm codeAL Fb
A main circuit fuse in the amplifier has blown due to voltage exceeding 2 [kV], and replacement is not permitted without contacting support. The manual's first action is: “The main circuit fuse is for preventing the secondary accident such as fire. The fuse cannot be replaced. Do not turn on power again, and contact us.”
- Model
- RYS MHT260a
- Display shows
- Fuse brown (AL Fb)
- Type
- Alarm code
- Source
- Manual p. 247
What AL Fb means
Fuse brown p. 254
Common causes
- Fuse brown p. 254
- Voltage was generated at both ends of the fuse in the amplifier main circuit (2 [kV] and above). p. 254
What to do
- The main circuit fuse is for preventing the secondary accident such as fire. The fuse cannot be replaced. Do not turn on power again, and contact us. p. 254
Before you service the product, read the safety instructions in the manual p. 3.
If AL Fb is still not resolved
- Contact Fuji for special systems or applications such as atomic-energy control, aerospace use, medical use, and traffic control. p. 4 “Customers, who want to use the products introduced in this manual for special systems or devices such as for atomic-energy control, aerospace use, medical use, and traffic control, are requested to consult the Fuji.”
This page summarises what the manufacturer’s manual says about AL Fb; 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 RYS. Found a mistake? Report an error.