This is the primary troubleshooting page for the Irritrol RainDial RD-600, RD 900, RD1200 Irrigation timer when valves don’t come on.
If the water is not coming on when it should, the problem typically resides these areas:
- Faulty timer
- Water availability
- Power Input Problems
- Valve/Solenoid Problems
To determine what is causing the problem, follow these steps:
A. Do some basic checks by using the timer to manually turn on a valve:
This is a key step in determining if the timer needs to be repaired: Follow the steps to manually turn on a station using this link to manually turn on a station. See here to understand if the timer is indicating the valve is on.
If the timer does not indicate it turned on a valve or flashes off, send it in for repair.
If the Irritrol controller “thinks” it turned on a valve but the valve doesn’t turn on, there are several possible reasons. If you have a -R model, it’s often a timer/backboard problem that can be repaired. Check some of the following first, then send it in for repair.
If the timer works with the manual function but not with a schedule, perform a factory reset and check the programming.
B. Check: Did someone turn the water off :-)
- Follow this link to check for common water distribution problems. If these seem good, continue.
C. Check: Electrical Input Issues:
- Follow this link to check for common electrical input problems. If these seem good, continue.
D. Check: The Transformer:
- Follow this link to check the transformer. If this seems good, continue.
E. Check wires and solenoid:
- Check wires are not broken, disconnected or miss-wired
- Follow the steps to check the valve/solenoid
F. Perform a factory reset:
- In some cases performing a factory reset can help. See the DIY page for more information.
G. Send it in for repair:
- Otherwise, the controller/system has simply failed and should be sent in for repair.
All material copyright Brian Keller, aka the RainDial Doctor