DIYbanter - View Single Post

wrote:

First you should check to make sure that all circuits are
programmed to run. Maybe the previous owner shut off
a circuit or 2 because of leaks he didn't want to fix?

If all circuits are programmed to run, follow the wires
leaving the controller, they eventually have to end up
at the valves.

Once you find the valves, try that wire-swapping thing.
Or, spend $10 on a cheap voltmeter, and check each
valve to see if it's getting voltage when it's supposed
to be opening.

If a valve is getting voltage and not opening, replace
the valve. If a valve is not getting voltage, trace the

Before going through the above, it should be checked that if the
controller is putting out control voltage to each valve. If there are
three zones then the three wires connected to the controller need be
identified. Then manually operate the controller to sequence the
controll output and see if each wire gets voltage in turn.
My controller quit putting out control voltage for one of the five
zones so I fixed by replacing the controller.