Diagnosis

NO POUR / SLOW POUR

Faucet open, nothing (or a trickle) comes out.

LIKELY CAUSES — RANKED MOST COMMON FIRST

1
EMPTY KEG
Most common cause — confirm before chasing other issues.
Fix
- Tap a fresh keg; mark and return the empty.
2
TRIPPED FOB DETECTOR
Foam-on-Beer sensor closed after the previous keg blew.
Fix
- Vent the FOB and re-seat the float per manufacturer instructions.
3
CLOSED SHUTOFF
A ball valve in the trunk line was closed during service.
Fix
- Walk the line from keg to tower; open any closed shutoffs.
4
FROZEN LINE / ICED COUPLER
Glycol or cooler too cold has frozen beer in the line.
Fix
- Warm the affected section gently with ambient air (no torches).
- Raise glycol setpoint to 28–30°F.

Capture temp at the faucet, applied PSI at the regulator, and a photo of the pour. Then check the spec reference or run a full line cleaning.