8 Fire Sprinkler Problems That May Require Professional Service
Updated 2026-11-12 · Reviewed by the Fire Solutions NW service team (28+ years in commercial fire protection)
Some sprinkler issues are simple; these usually are not.
1. Leaks at heads or fittings
Even small leaks can indicate corrosion or damage and should be evaluated.
2. Corrosion and pinhole leaks
Often a sign of internal pipe corrosion that may need investigation.
3. Frozen or broken piping
Common in dry or unheated areas after cold weather.
4. Dry pipe valve trips
An unexpected trip fills the system with water and requires resetting and draining.
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Dry systems depend on a reliable air or nitrogen supply.
6. Valve and gauge problems
Valves that will not operate or gauges that read incorrectly.
7. Damaged or painted heads
Typically replaced with matching listed sprinklers.
8. Obstructions after remodels
Ceiling or wall changes that block the spray pattern may require relocating or adding heads.
If a system or part of it is out of service, follow impairment procedures and notify your AHJ and insurer as required.
References
- NFPA 25 — Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems
General information only. Your adopted code edition and Authority Having Jurisdiction govern what applies to your building.
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