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Old 05-15-2017, 08:58 PM   #1
Join Date: Feb 2012
Location: S.California
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Irrigation timer: fuse keeps blowing off

I have Orbit irrigation timer 6-zone system. The timer stopped working and showed "off power". The fuse was blowing off.

After little bit of detective works and wasted few of the fuses, I had found out that the problem is zone 3. I also used multimeter measure zone 3 is around 5 ohm. The rest of the other zones are fine (~35 ohm). Apparently, the solenoid on zone 3 is bad.

Went to Lowes bought and replaced with new solenoid. Fused blowing up right after switched to zone 3. Replaced with another solenoid. Same thing, fuse blow off.

Reading over the net, all saying was if the ohm is low then the cause from solenoid. If crazy high out of range (20-60), the cause from the short wire.

For now, I use the system with no setting on zone 3.

What is wrong here.
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Old 06-19-2017, 07:41 PM   #2
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Re: Irrigation timer: fuse keeps blowing off

I really have no idea what is wrong. You seem to be going in the right direction by searching the net for info.

You replaced the solenoid. I agree with possible short theory. Check all wires/connections for corrosion/insulation wear. Make sure wire nuts are used if applicable.

Hope you get it figured out soon.
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