Blocked Door Lock – Causes, Identification and Professional Solutions

blocked lock

A blocked door lock is a common reason for emergency openings. But how can you recognize the problem, and what can you do about it?

How to Identify a Blocked Lock

1. Clicking sounds, but the door won’t open?

If you turn the key and hear a clicking sound, but the door does not open, it is very likely that the mechanism of the mortise lock is defective. The latch doesn’t move, even though the lock tries to release it.

2. The key only turns slightly and then jams?

This almost certainly indicates an internal break in the lock. A jammed latch or a broken cylinder prevents the key from properly moving the locking mechanism.

What to Do with a Defective Mortise or MFV Lock

In nearly all cases, we recommend contacting a professional. DIY attempts often make the problem worse.

Option 1 – Standard Opening for a Defective Lock:

• The locking cylinder is precisely drilled out. (emergency door opening)

• The mortise lock is then opened using specialized tools (e.g., a pick).

• The lock and cylinder are replaced with new components.

Option 2 – More Complex Opening (e.g. MFV Lock):

If your door is equipped with a complex multi-point lock (MFV) or there is insufficient working space:

• The external door hardware is carefully removed using a milling machine.

• The faulty mechanism is exposed, opened, and the entire lock unit is replaced.

What Happens After the Opening?

After a professionally performed emergency opening:

• No visible damage will remain on the door or its fittings.

• All necessary components (lock, cylinder, and hardware) will be replaced to match your original setup.

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P.S. – Key Stuck or Lost? This Can Also Be a Problem

• Key stuck from the inside – security lock

• Locked out, key stuck inside

• Door locked, key inside the lock

In such cases, professional help is also needed for damage-free access.

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Conclusion: Trust Professionals with Blocked Locks

A blocked lock isn’t a reason to panic – but it does require expert attention. We offer fast, reliable, and damage-free assistance.

Your Contact for Emergency Door Opening in Berlin:

Keyway Locksmith Service – fast help with door opening, lock replacement, and emergency services.