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If they are floating at 14.4 that isn't good, Cobber.

If they are absorbing at 14.4 then dropping to 13.2 ish float charge then that is fine.

My pleasure... always happy to help a fellow dog lover.

Whilst not technically 100% correct Controller and Regulator are thrown around without distinction these days in labels and explanation.
For our purposes there are two methods of harnessing the...

Did Jaycar sell that Reg to you as an MPPT?

If they did mention to them that they are looking to get their arse hauled thru consumer affairs or worse.
They are absolutely, definitely, 110%, surer...

Yeah, they say MPPT but they are full of kaka.
Nothing wrong with that tho, I have several.

$20 is fair enough for what you have (assuming it works).

For others reading this thread a good rule...

My bad... I didn't mean you weren't right... I meant something doesn't seem right with the controller itself.

How much did you pay for it and who from?

Something isn't right, Cobber

LED 1 should be Green with a panel connected
LED 2 should be Green if battery is charged but may take a few minutes to figure it out
LED 3 should be Red

By the...

1st LED -
Charge LED should be green, indicating that the system is charging normally.
The Charge LED will flash green when an overcharge condition or an open battery circuit exists.

2nd LED...

I wouldn't use a Merit Plug. Something like an Anderson Powerpole would be heaps better.

Is there a reason you don't want to "hardwire" the Reg to the Battery?
You could simply have 5 metres of...

If that is an MPPT Reg then always make sure you connect the Battery to the Reg first.
PV Regs doesn't matter
LED's sound like they are correct

You can't stop them as such, just reduce the chances of damage etc.
If you have portable panels sitting out on the ground with a nice yummy copper cable snaking over the ground, unplug and stow the...

Some do, some don't, you will need to check the specs for the Controller.
Also some panels have them and some don't so, again, you need to check.
Your Solar Controller sounds like it was a good one...

Agree with Cuppa, if the battery went down over night the Blocking Diodes are probably shot.

You can't test (reliably) a fair few Solar Regs if no battery is connected as they are trying to sense...