Wayne world

[Mrcoolabah1au]

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Thanks for your time today but bright sunshine today so some thing not working

[T1 Terry]

The PL20 uses a different shunt to read anything coming in or out, not the Victron shunt. There are a lot of reasons why the PL20 shunt isn't showing any readings but the easiest to check, pull the plastic cover off and you will find there is a small white plug that goes into the board under that cover, unplug it and plug it back in, does the PL20 show a reading now?

T1 Terry

[Mrcoolabah1au]

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Does not look like mine has one must be early model there are jumpers pins on the motherboard just like a computer but nothing on the pins as per photo

[Mrcoolabah1au]

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This might be a bit clearer pins are on left hand side

[T1 Terry]

If there is no shunt cable then possibly there isn't a Plasmatronics shunt either. That would mean the PL20 hasn't shown an amps in or out since the T1 Lithium system was installed, are you sure it ever read the solar amps in? Unless the solar runs directly through the PL20 or through a shunt with a cable feeding into those pins under the plastic cover, the PL20 can't see any current going in from the solar.

T1 Terry

[Mrcoolabah1au]

There is a second shunt but do not know what it does as far as know the pl one does one thing read battery voltage

[T1 Terry]

The PL shunt doesn't read battery voltage, the wire on the far left and the wire on the second from the right send the battery voltage to the PL20. The yellow wire you have in that bunch that is the second from the right should be in the far right terminal along with the resistor tail. I expect this is why you had no charging before, that resistor is designed to pass a limited current to the far right terminal so 12v is applied to the wire connected there. When the PL20 determines it wants to stop the charging it applies a negative internal connection to the load terminal. This creates a short across the resistor, the resistor stops it becoming a dead short to the battery positive so the resistors output is over come and the wire connected to the load terminal becomes a negative resulting in the solid state relay turning off.
I have no idea what damage you have done when you had the big zap, but it can't have been good.

T1 Terry

[T1 Terry]

What colour wire do you have on the SSR terminal 4 and terminal 3?

T1 Terry

[Mrcoolabah1au]

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No 4 is the top one yellow
blue on number three on the bottom
Yellow goes goes battery negative on the pl20
Blue goes to the Kemo timer relay section

[Mrcoolabah1au]

There are two yellow wires the far left comes from the battery down stair under the bus
The bright yellow wire that is in battery negative hole comes the solid state relay