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Old 05-09-2010, 08:36 PM   #16
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Sprinkler Troubleshooting???


mopowers
I'm glad you seem to have found a way to work on this. One caveat with your process of checking at the timer- irrgation solenoids are electromagnetic switches. It just happens you got lucky. To use a light bulb circuit as an example, using your process the problem could be the wiring as you discovered, the light fixture or the bulb itself. Say the bulb filament is bad. The circuit will not go through because the filament is the load. Checking continuity at the power source tells you that the current goes out but does not return without telling you where the problem is. My concern is that if you use this process in the future, you may wind up searching forever trying to isolate the problem. You were lucky here, the wire could have been broken anywhere along the circuit.

And yes, it's amazing how easily they can go out.

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Old 05-09-2010, 08:50 PM   #17
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Sprinkler Troubleshooting???


By disconnecting the wires at the solenoids, and connectoing them all together, I just wanted to see if there was one or two that were broken while taking the solenoids (or light fixture in your example) out of the equation. Once I established wires that were all good, I tested the solenoids and found the two that weren't working. I have since replaced them and everything works perfectly now. Thanks for all of the help.

This multimeter is actually a really cool tool. I can't wait to use it when I re-wire my racecar.

Last question- What usually goes bad in sprinkler solenoids??
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Old 05-10-2010, 05:44 PM   #18
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Sprinkler Troubleshooting???


OK, now I'm on the same page with you for isolating where the problem could be.
Actually, when I find bad solenoids, I just replace them and get onto something else. Maybe the next one I'll "autopsy" and try to find out.

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This multimeter is actually a really cool tool.

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