So.  You keg an IPA and a cider you have recently brewed, and place them neatly in your fancy kegerator.  You hook up the kegs to the system and the close the door, trusting your fancy CO2 canister and regulator to faithfully carbonate your beverages according to the precise pressure you have dialed up.  These things probably work best in the dark anyway, unwatched and untroubled by brewer’s eyes and hands.

After a few days of patient waiting, you grab a glass, pull the tap handle, and…. nothing.

Dammit!   WTF!

At this point your options are:

• A) retreat upstairs to temper your disappointment with a commercially-made (but fully carbonated) beer.  Whatever the problem, it is most certainly not going to be solved tonight.  Relax.
• B) open the fridge to immediately and angrily suss out the problem.  Be sure to stick your entire head and as much of your torso as possible into the fridge.  Which, mind you, has slowly been filling with carbon dioxide leaking out of your canister over the past few days. Take a few big breaths of the gas that should be carbing your beer, but is instead living freely inside your fridge.  Hmm, feeling a bit dizzy are we?

I liken this to trying to pick up the pot that someone else just dropped onto the floor after burning themselves.  Instinctive but damned stupid.

Safety First, kids.  Learn from me.