What does 'Fault' mean?
Fault means that the timer is detecting a short in one of the station wires attached to the timer. Typically this will happen with older valves or if you have multiple valves attached to one terminal of the timer. Our timer only allows a certain amount of amperage output of each terminal, and if that limit is surpassed, a fault will be triggered and your timer will stop sending voltage out to prevent the timer from damaging itself.
This can be caused by a bad solenoid, crossed wires, or a short in the wire itself.
First, identify that the issue is not the controller. Remove all wires from the timer and run a quick 1-2 minute cycle on each station. If you don’t see Fault on the display, then the fault will be in the solenoid or wires.
Second, you would need to test the resistance of the solenoid. To do this, you will need a multimeter. Test between the common wire and the zone wire of the zone in question. You should get 20-60 Ohms. Every manufacturer’s valves will havea slightly different reading. If the ohms are less than 20, the solenoid that operates that valve is defective and will need to be replaced. If the reading is above 60, there is a wiring issue. If you read 0 ohms, it is likely a cut wire. You can test another zone wire and if you get the same reading of 0, it means that the common wire has been cut.
Once this has been resolved, you should be able to connect your wires up again and run the system. The ‘Fault’ error should now be gone.