Office door won't close or latch fully

What this error means

The opposite problem: latch speed set too slow (no force left to seat the latch), closing spring power too weak or the closer undersized for the door, HVAC pressure pushing back, or plain hinge/strike misalignment. One compliance note before you crank anything: accessibility rules cap how aggressive you can get — ADA requires interior doors to open with no more than 5 pounds of force, and minimum closing-sweep times apply, so 'make it slam harder' isn't a legal fix.

Symptoms

• Door hangs open an inch from latched
• Latch clicks only when pushed by hand
• Worse when the HVAC runs (stack pressure)

Try this first (safe DIY steps)

1. Open the latch-speed valve slightly (counterclockwise, 1/8 turn) so the door finishes with authority
2. If it's weak through the whole swing, increase the spring-power adjustment if your model has one
3. Check the easy mechanical stuff: loose hinges, strike alignment, weatherstripping drag
4. Test after each change — small increments

Safety: power off before any physical intervention. Never bypass covers or interlocks — fuser areas run hot enough to burn.

When to call a technician

If spring power maxes out and it still won't close, the closer is undersized or worn — replacement territory ($200–$700 installed). Persistent latch misses after adjustment = door/frame alignment work.