Please ensure that the valves are opened for each zone(you can here a sound that the valve is opening), and then try reducing the water pressure at the inlet by adjusting the faucet, when there is water flow, then gradually increase the water pressure by turning on the faucet fully for normal watering. See if it gets back to normal. If not, please contact our customer service team to replace a new item to you.
Wi-Fi timers should be stored inside, in a warm dry place, during winter months, when temperatures are consistently near/below freezing. 1. Turn off water spigot.2. Disconnect hose(s) from timer outlet(s) and disconnect timer from spigot.3. Manually activate the timer to open valve(s) to drain residual water from inside the timer. Gently blow into top inlet to clear additional remaining water, until no more water drains out.4. Manually activate the timer to close the valve(s).5. Remove the batteries and recycle or discard them. (For next watering season, fresh batteries must be used.)6. Loosely cover the inlet opening with a plastic plug, and outlet opening(s) with plastic cap(s) (available at hardware and garden stores), and/or place timer in a sealable plastic bag, to prevent bugs and other debris from entering the timer during storage.