(All information here is copyrighted by Brian Keller, 2012).
Here’s the instructions for clearing the Irritrol RD-600 series sprinkler controller “FUS error” or “FU5 error” if it doesn’t go away easily. (It’s usually caused by a shorted solenoid, wiring, or voltage surge, or controller circuit problem…) (Incidentally, FUS stand for Fuse, if you see a 5, it’s really an S)
General overview: The information below can help isolate the problem to being an issue with a valve, but keep in mind that the fuse message is often due to a problem with the system that we can repair. Definitely use the troubleshooting information below to help determine if a valve(s) seems to be the problem. If it’s not, just send it in for repair; we’re happy to help.
- Try clearing the FUS message using the instructions below and see if it comes back.
- If it comes back, check the fuse if you have one — here’s a link on how.
- If the fuse is good, and the message comes back,
- the suspected “problem valve” number will show up in the top of the LCD screen when the FUS message is displayed.
- Try removing the wire for that valve number and run the schedule again.
- If you have multiple numbers appearing, remove the wire for each of them, clear the message, and run the schedule without the valves connected.
- If the FUS message does not return with the wires disconnected, it’s likely a solenoid or valve wiring problem. Reconnect the valve wires one by one until you find out which one causes the error to appear; this is your suspected bad valve/solenoid.
Once identified, try swapping around the bad valve wires to another terminal and see if the problem “follows” the valve wire. This will help confirm which one is bad. (The valve number shown with the FUS error will follow where you put that valve’s wire), If it follows the valve, check wiring and/or replace the solenoid.
- Solenoids are usually easy to replace, just turn the water off, disconnect the wires, unscrew the solenoid and replace it.
- You can get them from your local landscape supply store (E.g, SprinklerWorld, or other, but probably not HomeDepot or Lowes).
- If you want to pickup the parts first, take a picture of the valve to the store with you.
- If the FUS message returns with the same valve number even if you moved the valve to a new location, it’s unlikely that you’d have two solenoids fail at the same time and it is likely a circuit problem with the controller that we frequently repair; you can contact us here.
TO CLEAR THE FUS OR FUS/5 MESSAGE:
Set the dial to the Current Time position, press the + or – button