Lawn irrigation systems are organized into several zones, or valves - this acts as a failsafe of sorts for your system. If one sprinkler zone becomes defective, the whole system is not necessarily compromised, which can save you a lot of time and money. Each sprinkler valve has its own electrical valves for the sprinkler heads in that area, so if an individual zone is not working, that is a good place to start looking for the source of the problem.
Check all wiring in the sprinkler zone for stable and secure connections. Next, check to see that the transformer is plugged in and working. Then look at the circuit breaker to be sure that the main panel is on and working. If none of those appear to be malfunctioning, it may be best to test the voltage to the sprinkler zone using a multimeter, a device available at most local hardware stores and home centers. Turn on the broken sprinkler valve from the controller and measure the voltage to see if it falls within your systems recommended range (which can be found in the sprinkler system’s owner’s manual.
If it does not fall within that range, the controller may need to be replaced. If maintained properly, sprinkler controllers do not often break unless they are struck by lightning, but this has been known to happen. New controllers vary in price from about $175 to $400. When looking for a replacement controller, be sure to purchase the exact same model as was previously installed.
Dr. Sprinkler Repair, Salt Lake City, UT – (385) 226-5764