7VAC on it no matter what state the zone is in (on or off in the app) which I figured means it is fried and maybe the switch is barely touch so it give a little voltage. All of the zones except the one that I was having trouble with worked fine, the bad one has about. I went and bought all new fast blow 1.5A fuses, took the one off of the OSPi and soldered a new one in it’s place, replaced all the ones in my external fuse block, and buttoned everything back up. At this point I turned everything off and pulled the OSPi apart and discovered the slow blow fuses and pretty sure I burned up the relay for that zone. The transformer was good, OSPi was getting 26VAC, and the other zones all were getting 26VAC when I cycled them on through the app. I checked the fuse again and it was still good and the pi was still on so I knew something bad happened inside the OSPi. Using the app I turned on the zone but didn’t hear running water so I checked the fuse and it looked good but then all of a sudden I smelled burning electrical so turned off the zone. That zone worked great so I though all was fixed until I tried the other zone, the one that was chattering. I was standing in front of the OSPi, enabled the two zones and gave one a try. Once the new manifold and valves were cured and the new valves wired up I turned the water back on and thought my problems were behind me. In hind sight I don’t know but maybe the transformer was causing the chattering which ended up causing the pipe to crack. All seemed back to normal so figure it was just time for a new transformer, I pillaged it from the former sprinkler control box which was at least ten years old so figured it was just worn out from being in the 90+ degree garage all the time. In the mean time the transformer feeding the OSPi failed, the OSPi wouldn’t turn on and I checked the output of the transformer and got 3VAC and made sure it was getting 110+VAC on the input side which it was so I ordered a new one and replaced it. Since I had the new turn off installed I left the OSPi as normal and just disabled the two zones. The two valves were old anyway so I decided to replace both valves with a new ones.

Everything seemed fine for a day or so then when I went to turn the water back on for the two valves we noticed one of the valves kept chattering which was also causing our back flow to purge.

Since the prior installer did not install a shut off valve in the box we spent two days without water to the property so that I could cut out the cracked pipe and install a shut off valve ahead of the manifold. Came home to a massive leak at the nipple that had been going for an hour or more and flooded the back yard. I have a sprinkler box with two valves in it with an additional nipple that was capped off. Also inside I installed a 2A fuse and not the 1.5A like I did outside, I bought both 2A and 1.5A and intended to put a 1.5A inside. I didn’t realize it at the time but I installed slow acting fuses both internally to the OSPi and in my fuse blocks. Sorry for all the details but hopefully it explains the sequence.Ī while back on one of the zones’ solenoid got stuck and it burned out the OSPi fuse so I had installed a new one I also didn’t like that the Pi itself lost power when the fuse blew so I created a fuse block for each zone to have it’s own fuse. Is there something I can check and repair or did I screw up the OSPi and need to buy a new OSPi and expansion board?

I was going to switch the chattering zone’s wiring to another unused zone on the expansion board but now noticed that all of the formerly unused zones are also putting out ~7VAC no matter the state of the zone OSPi seems to operate normally on all former zones except the one that was chattering, this zone shows ~7VAC all the time no matter the state of the zoneĦ.

This is when I discovered my mistake with the slow blow fuse and replaced it with fast blow.ĥ. Operated the value that was not chattering and all seemed good but when the chattering valve was operated smelled burned electrical coming from the OSPi. Since the two valves were old anyway, went ahead and replaced all the pipe and values inside the box.Ĥ. Had a major leak in one of the sprinkler boxes where two valves “live”, repaired the leak then noticed one of the valves when operated through OSPi would chatter and cause water to come out the back flow preventer by the main valve.ģ. Didn’t notice at the time I bought slow blow fuses instead of fastĢ. A while ago one of the solenoids got stuck and burned out the fuse in my OSPi so I replaced it. On edit, short version here, long version below.ġ. Hoping someone can help me with a multitude of issues.

Opensprinkler pi unused zones voltage