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OC message on controller

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Kier

Member
Messages
9
Location
Isle of Wight
Hi all. Am wiring in shurflo 100psi pump and water genie digital controller. Have tested the pump straight to power and it works but when I wire in the controller I get an OC message. (Over current). Has anyone come across this? How did you fix? A temp fix would be appreciated just so I don't get too far behind on my week. Cheers Kieran 

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Hi all. Am wiring in shurflo 100psi pump and water genie digital controller. Have tested the pump straight to power and it works but when I wire in the controller I get an OC message. (Over current). Has anyone come across this? How did you fix? A temp fix would be appreciated just so I don't get too far behind on my week. Cheers Kieran 

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Are you using an inline 7 amp maxi blade fuse before the controller on the positive wire.

Also for reference and fault finding issues look at the Springs Europe Ltd website which has all the information and reasons to why faults occur.

 
Are you using an inline 7 amp maxi blade fuse before the controller on the positive wire.

Also for reference and fault finding issues look at the Springs Europe Ltd website which has all the information and reasons to why faults occur.
I don't but will try putting one on, and will have a look at website. Thanks 

 
I don't but will try putting one on, and will have a look at website. Thanks 
A note of caution. If that controller is brand new and has the instruction quite i suggest reading it.

That appears to be the V11 or earlier controller and getting the polarity wrong will cook it immediately deeming it useless 

 
A note of caution. If that controller is brand new and has the instruction quite i suggest reading it.

That appears to be the V11 or earlier controller and getting the polarity wrong will cook it immediately deeming it useless 
It's not any where near new, given to me 3rd hand but was working last week. Thanks for all the suggestions lads. I think I'm going to bite the bullet and get a new one. ??

 
Silly question but have you tried the calibration procedure or lowering the flow speed?

This is the first time I've hear about an OC on the display.
I believe in the manual it is listed as Over Current. So that could be a short in the wiring between pump and controller or maybe calibration is way off and needs redoing.

 
Silly question but have you tried the calibration procedure or lowering the flow speed?

I believe in the manual it is listed as Over Current. So that could be a short in the wiring between pump and controller or maybe calibration is way off and needs redoing.
Somethings wrong. I wonder if the controller and the pump are wired up correctly.

 
Have tried recalibration process. Still comes up the same. I think something might have shorted in the controller. There was a small loose screw rattling about in there and have now realized there's a burnt smell coming from it. I've ordered a new one. Hoping this does the trick. Yes I noticed there wasn't much online about oc. (Have also tried on a different pump and still says the same).

 
Try linking Ian Sheppard to this post would get a quicker response.

@Ian Sheppard, do you have a solution, Ian? Thanks
OC is the controller over current protection. This is on the pump side of the controller and if current draw of the pump is higher than 9.5amps the controller stops the pump to protect itself.

It's worth checking cables and connections to ensure these are all in good condition and tight. Replace any that are damaged or corroded. Also check for damaged cables. 

In some cases the issue could be the pump depending on age as the motor coil and brushes wear this can mean the pump draws higher current than expected. 

It would run connected direct to the battery as the battery will just supply current demand. The controller measures the draw where the battery doesn't. 

Check the cables going into the pump to see if these are damaged.

Try to avoid using white choc block connections as these have exposed terminals and get wet.

In some rare cases having high cal and flow rates (95)+ running into very small bore hose will mean the pump works hard and draws high current. 

As the controller is an older one and 3rd hand its possible the controller has suffered a short on the pump drive stage. But in those cases it would usually show PS. 

OC suggest cables or pump. 

Cheers 

Ian

 
Have tried recalibration process. Still comes up the same. I think something might have shorted in the controller. There was a small loose screw rattling about in there and have now realized there's a burnt smell coming from it. I've ordered a new one. Hoping this does the trick. Yes I noticed there wasn't much online about oc. (Have also tried on a different pump and still says the same).
Ok this does sound like damage to the controller pump drive stage. The rattling will be a capacitor off the board and the burnt smell a short circuit. Based on age replacement is probably the best option. Also please do fit an fine fuse. A fuse provides lots of protection and can save damage to the controller.

 
Somethings wrong. I wonder if the controller and the pump are wired up correctly.
If you look at OP's controller photo whats that nasty orange wire. Not normal spring wiring as it's normally 4 conductors red, black, blue & brown

 Has it been modified or tampered with ? Or is it just something else in shot 

 
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