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SolanaJohn

San Diego

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Posted: 09/20/19 06:17pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the help and suggestions. Breaker is not tripping. I get 12.8 volts across battery and also from battery neg to both sides of breaker both before and after power shuts off. Also, I found that I am unable to reset the system (get any lights to work or controller panel to function) unless I uncover the solar panel and plug into shore power briefly. I can then cover panel before proceeding to turn on enough lights to make everything shut down.

theoldwizard1

SE MI

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Posted: 09/20/19 06:24pm Link  |  Quote  |  Print  |  Notify Moderator

SolanaJohn wrote:


.
.
.
With shore power disconnected: battery shows 12.9V and DC fuse panel is 12.6 V.

With shore power connected: battery shows 14.6V and DC fuse panel is 13.6 V.

With shore power disconnected and solar panels uncovered in full light: battery shows 14.5V

So I conclude wiring from solar panels to battery is ok and wiring from battery to DC fuse panel is ok.


I disagree ! There should be ZERO voltage difference (drop) between the battery and the fuse panel.

SolanaJohn

San Diego

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Posted: 09/20/19 06:46pm Link  |  Quote  |  Print  |  Notify Moderator

@theoldwizard1, thanks! I checked this again (twice) and voltage across battery matches voltage from battery negative to DC fuse panel. Must have been poor measurement technique first time.

SolanaJohn

San Diego

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Posted: 09/21/19 01:18pm Link  |  Quote  |  Print  |  Notify Moderator

I ran through all the voltage checks again:
Shore power off (no power to trailer)
Solar panels not covered/full sun.
Solar controller panel reads error (can’t detect a battery)
Across battery: 12.8V
Battery - to fuse + : 12.8V
Battery - to CB near battery: both sides 12.8V
Cover solar panels
Solar controller panel goes blank
Across battery: 12.75V
Battery - to fuse + : 12.75V
Battery - to CB near battery: both sides 12.75V
Plug in shore power (solar panels still covered)
Solar controller panel indicates 13.7V (no indication that battery is being charged)
Across battery: 12.77V
Battery - to fuse + : 12.77V
Solar panels not covered/full sun.
Solar controller reads charging up to “13.8V / Full”
Unplug shore power
Across battery: 13.58V
Battery - to fuse + : 13.58V
Cover Solar panels
Across battery: 12.9V
Battery - to fuse +: 12.9V
Controller panel shows 12.7V
Turn on lights sequentially until all lights fail.
Turn off all light switches. Switch on lights (none light).
Return all light switches to off position.
Across battery 12.8V
Battery - to fuse + : 12.8V
Next steps/any ideas?

CA Traveler

The Western States

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Posted: 09/21/19 01:53pm Link  |  Quote  |  Print  |  Notify Moderator

SolanaJohn wrote:


Plug in shore power (solar panels still covered)
Solar controller panel indicates 13.7V (no indication that battery is being charged)
Across battery: 12.77V
STOP TMI in your post.

Find out why your shore power charger is not charging the battery. You have an open somewhere, bad charger or miswired wiring.

Your post implies the charger is connected to the solar panels and not the battery. [emoticon] Suggest to completely disconnect the panel wires and the solar controller output wires.

Start with the obvious things than need fixing and proceed until it all works.


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Bob


Sam Spade

North Central Florida

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Posted: 09/21/19 02:35pm Link  |  Quote  |  Print  |  Notify Moderator

SolanaJohn wrote:


Turn on lights sequentially until all lights fail.
Turn off all light switches. Switch on lights (none light).
Return all light switches to off position.
Across battery 12.8V


You are barking up the wrong tree, so to speak.

You NEED to do a similar set of measurements WHILE THE LIGHTS ARE FAILING.

I suggest that you disconnect the solar system completely and then make some more measurements.

It should be bridged in parallel with the batteries and converter/charger and should NOT be causing what you are seeing even if it is failing.......unless someone has made a huge wiring error.


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SolanaJohn

San Diego

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Posted: 09/21/19 02:54pm Link  |  Quote  |  Print  |  Notify Moderator

Hmm. I thought more info = better. None of this is obvious to me so... does anyone know of a good electrician/shop in the San Diego area?
Thanks!

time2roll

Southern California

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Posted: 09/21/19 03:09pm Link  |  Quote  |  Print  |  Notify Moderator

Load it up until power cuts off as originally stated. Then with everything failing to work check your battery voltage. If you have battery voltage above 12 then find the open connection. If battery voltage is dropping then have the batteries checked.


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SolanaJohn

San Diego

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Posted: 09/21/19 04:06pm Link  |  Quote  |  Print  |  Notify Moderator

SolanaJohn wrote:


Controller panel shows 12.7V
Turn on lights sequentially until all lights fail.
Turn off all light switches. Switch on lights (none light).
Return all light switches to off position.
Across battery 12.8V
Battery - to fuse + : 12.8V


Thanks, I did this already and since battery is over 12 volts (12.8) that means an open circuit? OK, but since battery to fuse is also 12.8 volts then does that imply open circuit is between fuse and lights?

time2roll

Southern California

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Posted: 09/21/19 04:08pm Link  |  Quote  |  Print  |  Notify Moderator

SolanaJohn wrote:

Thanks, I did this already and since battery is over 12 volts (12.8) that means an open circuit? OK, but since battery to fuse is also 12.8 volts then does that imply open circuit is between fuse and lights?
Yes. Keep checking until you find some device or connection with 12.8 on one side and near zero on the other.

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