Solutions may help you:
1. If HOW LONG/HOW OFTEN dial is set to OFF, turn the dials to desired how long/how often.
2. If low battery indicator flashes, replace with new batteries.
3. If the hose faucet is off, turn on the faucet.
4. If the diaphragm inside the built-in solenoid valves is stuck, reset the solenoid valve. Step 1: Attach the timer on a faucet and open the faucet to max. Step 2: Manually turn the timer on for more than 5 seconds and turn it off. Repeat it more than 5 times until water flows through the valve smoothly.