[JSMC]

I think adjustments need to be made for pressure to begin with but unsure what the L is for. I will chrck battery but had a full charge over weekend.

[Clever Forum Name]

L means low battery

[Smurf]

Here is the user manual for the vsd6 if you have the same one that might help

[JSMC]

Unsure what model this one is. 

Puzzled why battery is low after full charge. All my work is mainly trad on shops. Poles are used but surely battery is not done after 14 months?

[matthewprice]

I would look at connections had same happen cleaned or replaced connections all worked fine after

[JSMC]

Sorted connections other month with new connector blocks n should still be ok

[Spruce]

L = the voltage of the battery is dropping to 11.5v under load.

It could indicate that the battery needs replacing. Whenever we have had issues with a failing leisure battery, they have always shown up as fully charged. What happens is the the battery lost its capacity and started to go flat once that reduced capacity was exhausted.

The battery started off as expected but would 'die' a few hours into the work schedule. So a 110 amph leisure battery ended up with a capacity of 20 amph.

From a discharged state we noticed they they very quickly became fully charged.

It could also be a bad connection as has been posted by others. The first place to check is at the fuse holder. If it gets hot then there is a resistance - a resistance causes a current restriction and reduced voltage.