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earthmgtsolutions
08-26-2011, 09:54 PM
I walked into a problem. A Hunter ICC clock with 32 zones. Zones 1,2,3,4,5,7,8,9,11,13,14 do not come on with the clock. When I put a multi-meter on the clock, there are multiple stations with showing power. Oddly enough, the zones that work, 6,10,12,15,16... do not have power. (as they should not) There are multiple common wires, 5, coming into the central wiring box. As I tested, one of the common wires had 25.7 volts coming through it. I realized this is why the zones on the clock were reading power. I am thinking I have a solenoid that has gone bad letting power through. Also, I have 3 Valve boxes under water. I pumped them out and pulled the wires up to dry. They appeared fine but...
So the question is...How would it be possible for multiple zones to want to fire, ie. the hot common?? Would one bad solenoid do that?? Would the problem only occur when the zone with the bad solenoid fires?? Apparently not!! How can I locate which solenoid is bad without checking all 11 that are not working?? My brain hurts!!

mitchgo
08-26-2011, 11:23 PM
It doesn't really work like that.

How much voltage were you reading you stated that multiple zones had power?

what were your ohm readings from the zones? ( Ohm readings when diagnosing valves in the field is much more important then voltage)

The power can only be produced from it's source right? In this case it's the controller.

Sounds to me like the controller is fauling up. Some others may be able to enlighten you more with this specific controller. If you search on this forum you will see similar situations. The command module may have gone bad? Faceplate bad?

For testing purposes Swap the zones around and see if zones that weren't working before are working on the working ports ( Ie swap zone 1 that wasn't working to port 10 to see if the original zone 1 wire works on port 10) again ohm out the valves first to make sure you have a proper reading

Irri-Light
08-27-2011, 09:49 AM
Check your ohm readings first with each wire disconnected from the controller. If you've got multiple commons you will have to find the common for that run of wires. With the wires disconnected, check the output at the terminals on each module. Do the zones in question still have power output?

With so many zones not working, it sounds to me like a loose/ broken common wire?

And there may be bad modules too. I have had Rain Bird, Weathermatic, and Hunter modules go bad. Most of the time it's just no output on the ones I've found though. You might try removing and reinstalling each module, then resetting the controller.

FIMCO-MEISTER
08-27-2011, 10:12 AM
Don't want to repost it but here is a good troubleshooting flow chart to print out.
http://www.lawnsite.com/showpost.php?p=4071641&postcount=12

Mark B
08-27-2011, 03:13 PM
Thanks for the link. I will print that out when I get back to work.
Posted via Mobile Device

Mike Leary
08-27-2011, 03:17 PM
The first thing I'd do would be to unplug the clock, remove the battery and let it sit overnight. A lot of times, "pilot error" is the cause.

earthmgtsolutions
08-27-2011, 06:29 PM
Thanks for the info guys but no one has touched on why the common wire has power coming through it?????

Wet_Boots
08-27-2011, 06:39 PM
"power" from where to where?

earthmgtsolutions
08-27-2011, 07:09 PM
when i put my amp meter on one of the commons from the field, it is showing 27 volts, the other commons have no power, as expected. Not sure why the bleed back on the common

Wet_Boots
08-27-2011, 07:11 PM
meters have two leads - we got that you touched one of the leads to a common wire, so tell us about the second lead

greenmonster304
08-27-2011, 07:33 PM
Don't want to repost it but here is a good troubleshooting flow chart to print out.
http://www.lawnsite.com/showpost.php?p=4071641&postcount=12

Well by Jesus that there is the rootin'est tootin'est troubleshootin flow chart I've ever seen by golly.
Posted via Mobile Device

Wet_Boots
08-27-2011, 07:39 PM
Well by Jesus that there is the rootin'est tootin'est troubleshootin flow chart I've ever seen by golly.
Posted via Mobile Devicethere's always this diagram....

greenmonster304
08-27-2011, 07:45 PM
there's always this diagram....

Is that a flux capacitor I see?
Posted via Mobile Device

Wet_Boots
08-27-2011, 07:49 PM
I include that diagram with every controller I install

mitchgo
08-27-2011, 08:06 PM
The common isn't 'bleeding back' like you think it is

you really need to ohm out your valves from the controller

What is it like 75% of electrical diagnosing is done from the controller. At least it tells you what needs to be done next

FIMCO-MEISTER
08-27-2011, 10:58 PM
there's always this diagram....

It skipped the blinker fluid cap is loose.

1idejim
08-28-2011, 11:00 AM
I walked into a problem. A Hunter ICC clock with 32 zones. Zones 1,2,3,4,5,7,8,9,11,13,14 do not come on with the clock. When I put a multi-meter on the clock, there are multiple stations with showing power. Oddly enough, the zones that work, 6,10,12,15,16... do not have power. (as they should not) There are multiple common wires, 5, coming into the central wiring box. As I tested, one of the common wires had 25.7 volts coming through it. I realized this is why the zones on the clock were reading power. I am thinking I have a solenoid that has gone bad letting power through. Also, I have 3 Valve boxes under water. I pumped them out and pulled the wires up to dry. They appeared fine but...
So the question is...How would it be possible for multiple zones to want to fire, ie. the hot common?? Would one bad solenoid do that?? Would the problem only occur when the zone with the bad solenoid fires?? Apparently not!! How can I locate which solenoid is bad without checking all 11 that are not working?? My brain hurts!!

you really haven't given enough of the right information to allow anyone to help you, voltage measurements aren't enough. as mentioned, you need to isolate and "pair" each common wire with the valve wires that they service. while you are doing that, document the resistance measurements for each zone. the probability of zones 1-2-3-4-5-7-7-8-9-11-13-14 being on the same common is high but not absolute until verified.

you need to do some more work before anyone here can be of help

Thanks for the info guys but no one has touched on why the common wire has power coming through it?????

you still haven't supplied enough information


when i put my amp meter on one of the commons from the field, it is showing 27 volts, the other commons have no power, as expected. Not sure why the bleed back on the common ??????????????


you seem to be locked onto a bad solenoid train of thought "How can I locate which solenoid is bad without checking all 11 that are not working??" so you already have eliminated other paths and tunneled your vision. no wonder your noggin hurts.

start fresh, bring all of the measurements of the wiring and solenoids to the table, check your voltages in parallel and "under load" for accuracy, current is measured in amps or milliamps and in series. resistance is measured in ohms and megohms for the best results. try a short to earth test of each zone wire and their common for insulation from the earth.

in order to receive any help here you are going to have to do your homework.

BTW: i have found that you can tell if you have a bad splice in a water filled box by simply turning the zone on and sticking your hand in the water

Wet_Boots
08-28-2011, 11:10 AM
............BTW: i have found that you can tell if you have a bad splice in a water filled box by simply turning the zone on and sticking your hand in the wateror stand by the water-filled box in your bare feet and take a wizz into the box :eek:

Mike Leary
08-28-2011, 06:42 PM
I'm missing something, as per me. Has the OP proved the clock yet? :dizzy:

1idejim
08-29-2011, 08:28 AM
I'm missing something, as per me. Has the OP proved the clock yet? :dizzy:

i don't think the op is a shooter, when he gets to 10 posts he can pm me for a guide to his troubleshooting issues though. i spent an hour typing up some suggestions last evening. :waving: