Doors & Hardware

BuildingWrench repair guide

Doors & Hardware

Fire Door Hold-Open Magnet Won’t Release: What Maintenance Should Check

A magnetic fire-door holder that will not release on alarm is a life-safety defect. Maintenance can check mechanical binding and observe release during an approved test, but should not alter fire-alarm wiring.

Last reviewed 2026-09-12 · General facility-maintenance information, not a substitute for site procedures, manufacturer instructions, codes, or qualified professional judgment.

Routine facility fixSkill: Beginner-friendlyFormat: Diagnose → Fix → Test
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Safety boundary

Preserve required egress, fire-door, security, and accessibility functions after any adjustment.

Full troubleshooting steps are in Pro

The safety boundary, quick answer and stop-work conditions above stay free. Pro opens the likely causes, symptom table, step-by-step procedure and preventive maintenance for this guide.

Stop and call a licensed professional when

  • Holder does not release during required test
  • Door does not self-close and latch
  • Fire-alarm wiring service is required

Mistakes, FAQ, parts and tools

Pro opens the rest of this guide: common mistakes, field FAQ, the parts list, and the tools for the job.

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Door Problem: Latching, Closing, and Hardware

Watch the door through a full swing before touching a tool. Most problems are a loose hinge screw, a misaligned strike, or a closer that needs a sweep and latch adjustment. Fire-rated and egress hardware must keep working as listed: no wedges, no disabled closers, no field modifications.