Solar controller help....

Gday,
I have a Bp 40 watt solar panel connected through a 12v 7a projecta solar controller.

When I test the back of the controller at the solar connections , I get around 15 volts.

When I test the back of the controller at the battery connections , I get 0 volts.

When I test the back of the controller at the AUX connections , I get around 14.5 volts.

Does this mean I have smoked my controller?????

I put my multimeter on a battery which has around 12 volts in it and then connected my panel up and the voltage didn't change??????

Any ideas????

Cheers

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Reply By: Maîneÿ . . .- Monday, Mar 29, 2010 at 13:28

Monday, Mar 29, 2010 at 13:28
When I test at solar connections - 15 volts.
When I test at AUX connections - 14.5 volts.
When I test at battery connections - O volts.

Does this mean I've smoked my controller - Yes, most probably
recheck the battery connections to make sure zero Volts

Maîneÿ . . .
AnswerID: 410892

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 13:34

Monday, Mar 29, 2010 at 13:34
Yeah mate....."o" at the battery connections.

I heard a while ago they need a load on them to test or it will think the battery is full and switch off?.......thats why I tested it on a low battery????

Can I use the AUX connections instead of the Battery ones?
The bloddy thing has only been used half a dozen times!!!!!!
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FollowupID: 680911

Reply By: Alloy c/t - Monday, Mar 29, 2010 at 13:36

Monday, Mar 29, 2010 at 13:36
Smoked it ? Maybe , twas me I would disconnect the lot and start the reconnect in sequence and then test with the multimeter , . 1st panel to controller then controller to bat and 3rd pos and neg to load [fridge /lights ect].
AnswerID: 410893

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 13:46

Monday, Mar 29, 2010 at 13:46
I have voltage at the panel/solar connection.
nothing at the battery connection on the solar controller?
To me that means there is voltage going into the controller and nothing coming out ( buggered) or I need a load onto test it and Im doing something wrong.

Cheers
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FollowupID: 680913

Follow Up By: Mandrake's Solar Power- Monday, Mar 29, 2010 at 14:43

Monday, Mar 29, 2010 at 14:43
I have one of these on my Tardis ..

When you connect that particular unit to the battery ONLY does the top LED come on ? If not - you need a new controller ...

Cheers

Steve

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FollowupID: 680918

Follow Up By: Mandrake's Solar Power- Monday, Mar 29, 2010 at 14:45

Monday, Mar 29, 2010 at 14:45
Sorry wrong -- Does any one of the 3 LEDs light up ? If not you have a dead controller ..

Cheers

Steve

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FollowupID: 680919

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 16:15

Monday, Mar 29, 2010 at 16:15
Mine only has 2 lights. "Charging and Fully Charged"
When its connected to the Battery, they are both on?
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FollowupID: 680931

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 16:19

Monday, Mar 29, 2010 at 16:19
Sorry...thats when its connected to the battery and solar panel...........Should I disconnect the solar Panel? The controller is actually mounted on the panel.
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FollowupID: 680932

Follow Up By: Maîneÿ . . .- Monday, Mar 29, 2010 at 16:28

Monday, Mar 29, 2010 at 16:28
Disconnect controller and reinstall it beside the battery, paying attention as to which wires are connected in which order and make sure they are correctly attached again

Maîneÿ . . .
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FollowupID: 680934

Follow Up By: Mandrake's Solar Power- Monday, Mar 29, 2010 at 16:35

Monday, Mar 29, 2010 at 16:35
My one is exactly the same as the pic you put up on the original post - It has 3 LEDS - when battery is fully charged the top LED is green - when charging the next one down is orange and if the battery is very very low ( I've never seen this ) the bottom LED is red ... .

If you need a new controller let me know ...I have a few spare ones !!

Cheers

Steve

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FollowupID: 680936

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 17:43

Monday, Mar 29, 2010 at 17:43
I was told to mount it on the panel so I can connect it up to any battery? Does it make any difference? Otherwise I will need a separate controller for every battery?

Can I use the Aux outlet? Its showing around 15 volt output?

Cheers
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FollowupID: 680944

Follow Up By: Maîneÿ . . .- Monday, Mar 29, 2010 at 18:19

Monday, Mar 29, 2010 at 18:19
Then I will rephraise it, attach it near the battery, so it is detachable, and can still be used with any battery as it will eliminate the problem of voltage loss in the cable.

Maîneÿ . . .
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FollowupID: 680952

Follow Up By: Hairy (NT) - Monday, Mar 29, 2010 at 19:24

Monday, Mar 29, 2010 at 19:24
Still makes no difference............Both lights on........disconnect the battery leads and no output through the battery connections and 15 volts through the AUX connections?


When the controller is attached to the panel only it still has both lights on.

Can I just use the AUX connections instead of the battery ones or is that meant for some other use?

Cheers
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FollowupID: 680955

Follow Up By: oldtrack123 - Sunday, Apr 04, 2010 at 11:11

Sunday, Apr 04, 2010 at 11:11
Hi Hairy

I would suggest you take the following steps.
[1] FIRST, Recheck ALL wiring paying particular attention to correct polarity
[2] Disconnect battery & check if it has any voltage.
I do not know for sure with Projecta but some regs need a voltage from battery to switch on.
Try charging battery from another source to see if it will accept a charge.[
3]Try with another battery.

Put small 5amp fuse in line in case you have a wrong connection to prevent excess battery current feeding back into reg
The only thing that i believe could realy "smoke" your reg is a wrong polarity connection somewhere so as above check all cons for correct polarity very caraefully

Re" Auxillary "terminals these will not control battery state of charge.
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FollowupID: 681636

Follow Up By: oldtrack123 - Sunday, Apr 04, 2010 at 11:19

Sunday, Apr 04, 2010 at 11:19
H i hairy


Edit to above
!5 v @ panels indicates a load of some sort, somewhere
If no load voltage would be higher.
So again indicates either a an incorrect connection or a shorted battery.
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FollowupID: 681637

Reply By: GerryP - Monday, Mar 29, 2010 at 20:20

Monday, Mar 29, 2010 at 20:20
Hi Hairy,

Maybe I'm missing something (wouldn't be the first time...), but if it's connected to a battery, there has to be a voltage at the battery terminals, unless you have a broken wire/connection?

Gerry
AnswerID: 410952

Follow Up By: oldtrack123 - Monday, Mar 29, 2010 at 22:42

Monday, Mar 29, 2010 at 22:42
Hi Hairy
To me IF NO VOLTS @ battery ,it is dead flat & may not accept a charge.
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FollowupID: 681003

Follow Up By: Mike DiD - Wednesday, Mar 31, 2010 at 16:58

Wednesday, Mar 31, 2010 at 16:58
If you measure 0 volts at the Battery terminals of the controller, don't blame the controller. You need to check what's wrong with your wiring.

The controller may not work at all unless you firstly connect the battery (properly) to the controller.
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FollowupID: 681291

Reply By: Jumankum - Sunday, Apr 04, 2010 at 14:55

Sunday, Apr 04, 2010 at 14:55
Sounds like you may have a blown fuse between the battery and controller

Check contunuity between positive of controller and battery

If wiring is ok you should see battery voltage at controller regardless of condition of solar panels or charge controller

Cheers Jim
AnswerID: 411624

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