Alarm codeAL Fb
Fuse brown indicates the main circuit fuse is blown due to excessive power, and cannot be replaced 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
- Faldic MHT259a (RYS-L type)
- Display shows
- Fuse brown (AL Fb)
- Type
- Alarm code
- Source
- Manual p. 326
What AL Fb means
Fuse brown p. 333
Common causes
- Fuse brown p. 333
- Voltage was generated at both ends of the fuse in the amplifier main circuit (≥2 [kW]). p. 333
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. 333
Before you service the product, read the safety instructions in the manual p. 3.
If AL Fb is still not resolved
- contact service / dealer p. 3 “reference must be made to this manual and other related documents.”
- contact service / dealer 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 Faldic. Found a mistake? Report an error.