Air Con - How to diagnose?

[Chris Wickers]

Air con ran fine last year.

Start of this year - nothing so got it re-gassed.

Collected it and it worked fine.

Two days later - nothing.

When switching between a/c and no a/c there is no change in engine note.

Where to start?

I know the push button control is notorious for dry joints - however if it is something else I would rather not take the dash apart as when I take it apart something normally goes ping, or snap, and whereas this would normally mean expense to replace said 'pinged' or 'snapped' item on a 480 it is different as said parts are no longer available - thanks whoever decided to discontinue all the parts! (I already have the joys of trying to modify a bit for my cruise control which has snapped, pinged, and disappeared...........)

All advice gratefully received.

Kind regards

Chris