Joshua Peterson with Peterson Electric in Loveland, Colorado to look at a sprinkler clock. The sprinkler guy was saying the voltage was inconsistant and the pressure was not right. What we found with the sprinkler clock was he had a GFCI outlet right here. All sprinkler clocks should not be on a GFCI. They need to be on a normal yoke receptacle. We changed that out. Keep in mind, to check our battery, a 9 volt battery behind your sprinkler clock. If that battery is bad, it will not charge. You can also check with a meter, the transformer ran to the sprinkler clock. We had 27 volts, at the sprinkler clock, showing that the transformer was transform the voltage because it runs on low voltage. Here are some tips. Hope it helps. If you know how to use your meter, check your 9 volt meter and if you are running less than 8 volts then I doubt it is going to work.
