Problem: Have a wet patch in your garden or turf that never dries up?
Likely Cause: Leaking solenoid*
*A solenoid is like a tap and when the diaphragm wears it leaks like a tap washer but the water can only escape through the lowest sprinkler on that line.
Solution: Replace solenoid valve.
If the system is getting over 5 years old and you have a solenoid valve start leaking it is a good indication that you should probably replace them all.
Problem: Sand or dirt washing to surface
Likely cause: Broken pipe, blown off pipe or cracked fitting
Solution: Repaired or replaced
Problem: Sprinkler leaking from around the shaft when running:
Likely problem: Worn out
Solution: Time to replace
Problem: Valve boxes full of water
Likely problem: Leak in manifold or from solenoid
Problem: Controller has no display
Likely problem: It has had a surge
Solution: Depending on brand. In some instances you can reset the controller via a reset button and in others they have a fuse that can be replaced.
If this doesn’t work your controller has probably been damaged beyond repair due to electrical fusion and needs replacing.
Problem: The water wont turn off even when you have unplugged the control unit
Likely problem: A solenoid valve has failed
Solution: The water supply to the sprinkler system needs to be cut off temporarily while part is replaced.
Every system that complies with council regulations has an isolation valve that can turn the sprinkler system off without effecting the water supply to the house. It is generally located near the solenoid valves or your water meter.
Problem: After an irrigation cycle has finished it starts again
Solution: you have set more than 1 x start time on your controller.
You only need to set 1 x start time this will activate all the valves in sequence
Need to adjust your Hunter PGP rotary sprinkler
Lost your Hunter controller book