Home Improvement

Guide to Multipoint Door Lock Problems

Fantastic Team
Published: Feb 20/2024
Last update: Feb 27/2024
8min read
Views: 1,860

Image source: TSViPhoto / Shutterstock.com

If you’ve ever encountered issues with your multipoint door lock, rest assured, you’re not alone. Undoubtedly, these sophisticated locking systems provide more protection, but when they malfunction, they can be a major pain.

In this article, we will take a closer look at the common multipoint door lock problems we all face. Additionally, we will provide practical guidance and solutions on how to best address these issues. But before we do all that, let’s address one simple question…

What is a multipoint door lock?

A multipoint door lock is a sophisticated locking system commonly used in modern doors, especially those with uPVC or composite construction.

Unlike traditional single-point locks that secure the door at only one point, multipoint locks use multiple locking points along the edge of the door. These locking points typically include bolts or hooks that extend into corresponding keeps or strike plates on the door frame when you engage the lock.

For those features, multipoint door locks provide better security and stability compared to single-point locks. They distribute the force of attempted break-ins across multiple points, making it more difficult for intruders to force the door open.

As a nice bonus, multipoint locks help improve the overall sealing and insulation of the door, enhancing energy efficiency and weather resistance.

The operation of a multipoint lock is usually controlled by a single handle or cylinder mechanism. When the handle or cylinder is turned, it activates the internal mechanism of the lock, extending or retracting the locking points simultaneously.

So far so good, these locks are definitely robust, but…

What are the common issues with multipoint door locks?

Encountering problems with your multipoint door lock can be frustrating, but identifying specific issues based on symptoms is the first step towards finding a solution. You will notice that these symptoms are actually the result of several common factors. The ways in which you can fix each of them are also similar in most cases.

So, let’s start when the…

Multipoint door lock is jammed

A stuck multi-point door lock is usually the result of wear-and-tear misalignment or damage to the lock cylinder itself. Unlike simpler door lock systems, handling a jam with a multipoint door lock can be more complex due to its intricate mechanism.

Still, there is something you can do:

Inspect the locking points – Carefully examine the locking points along the door frame to identify any visible obstructions or misalignments;
Check for debris accumulation – Remove any debris or dirt that may have accumulated in the locking mechanism or along the door frame. Use a brush or compressed air to clean out the area as well as you can;
Lubricate the mechanism – Apply graphite spray or a silicone lubricant to all the locking points and other moving parts of your multipoint lock. Hopefully, it should help free up any components that are stuck and improve the overall operation of the lock;
Adjust the door alignment – If misalignment is causing the jam, you may need to adjust the door alignment so it sits properly within the frame. This may involve tightening or loosening the hinges or adjusting the strike plate to improve the fit of the door.

Dropped door handle

Seeing drooping handles on any door, especially one with a multipoint door lock, is worrying. It could mean that the locking system has been under a lot of strain or that the cam mechanism is wearing out. So, what can you do about it?

Examine the handle – Start by examining the handle and the mechanism to identify any visible signs of wear, damage, or misalignment;
Check the roller cam adjustment – Dropping door handles, especially common in uPVC doors, may indicate issues with the roller cam adjustment. Ensure that the adjustment is set correctly to maintain proper alignment and operation;
Adjust the handle mechanism – Depending on the type of multipoint lock system, you may need to adjust the handle mechanism to restore proper functionality;
Lubricate moving parts – Apply lubricant to the moving parts of the handle and the lock mechanism to reduce friction and facilitate smoother operation. Use a silicone-based lubricant for uPVC doors to prevent damage to the material;
Consider replacement – If the handle or the internal components are significantly worn or damaged, you may need to replace them;

The multipoint door locking system won’t lock

When your multipoint door lock refuses to engage, it could be due to issues with the alignment of the locking points, worn-out components, or problems with the cylinder mechanism. Once again you need to…

Take a closer look at the door alignment – Begin by examining the alignment of the door and its frame. Ensure there are no misalignments causing the locking points to malfunction;
Adjust hinges or striker plate – If the locking mechanism appears misaligned, consider adjusting the hinges or the striker plate to achieve proper alignment;
Clear obstructions – Check for any debris or obstructions that might hinder the locking mechanism from engaging fully. Remove any impediments to ensure smooth operation;
Examine gearbox and cylinder – Look closely for any issues that could be affecting functionality;
Check key and cylinder – Assess the key and key cylinder for any irregularities. If the key doesn’t turn smoothly or encounters resistance, there may be issues with the keyway or internal components of the cylinder.

Need lock repair services?

Leave it to the professionals!

Learn more

Need lock repair services?

Leave it to the professionals!

Learn more

Stuck multipoint door lock hook

A stuck multipoint door lock hook can prevent proper locking and may be caused by debris buildup, rust, or mechanical issues.

Assess the situation – Once again, look for any visible obstructions or debris that may be preventing the hook from moving freely;
Apply lubricant – Graphite spray or silicone lubricant will work wonderfully. Apply the lubricant generously to the affected area and try to move the hook gently back and forth to see if it loosens up;
Check for misalignment – Sometimes, the hook may get stuck due to misalignment of the locking mechanism. Inspect the alignment of the door and its frame to ensure they are properly aligned. Adjust the hinges or striker plate if necessary to improve alignment;
Attempt gentle manipulation – With caution, try gently manipulating the stuck hook with your hands or with the help of a flathead screwdriver. Apply minimal force and be careful not to damage the lock mechanism or door frame.

Door won’t open properly

If your multipoint door lock is having trouble opening, it could be due to issues with the alignment of the locking points, a malfunctioning cylinder mechanism, or worn-out components. As you already know by now…

Test the lock alignment – If you notice any misalignment, adjust the hinges or striker plate;
Examine cylinder mechanism – Assess the functionality of the cylinder mechanism. Look for any signs of damage or malfunction;
Check components for wear and tear – Worn-out parts can impede the proper operation of the lock. Replace any damaged or worn components to restore functionality;
Lubricate moving parts – Apply a silicone-based lubricant to the moving parts of the lock, including the cylinder and locking points. This will help reduce friction and allow the lock to operate more smoothly;
Test the lock again – After performing the necessary adjustments and maintenance, test the lock to ensure it opens and closes properly.

Multipoint lock not working with key

The keyway or internal components of the cylinder may be damaged or worn out. Additionally, components such as springs or levers, may have deteriorated over time resulting in the key not working at all or even breaking into the lock if you apply too much pressure. You already know what to do.

Key inspection – Examine the key for any signs of damage or wear;
Cylinder examination – Inspect the key cylinder and its internal components for any debris, corrosion, or damage. Lubricate the cylinder with graphite powder or silicone spray to improve its operation;
Alignment check – Ensure that the door and its frame are properly aligned. Adjust the hinges or striker plate if necessary to achieve proper alignment and allow the key to engage the locking mechanism smoothly.

When to call a locksmith to service your multipoint lock?

Multipoint door lock problems can occasionally be trickier to solve than they seem, requiring the knowledge of a qualified locksmith. Whether in a residential or commercial environment, some circumstances call for the assistance of a licenced locksmith to guarantee the security and effectiveness of the locks on your property.

At Fantastic Services, our locksmith services cater to both domestic and commercial needs, offering quick fixes for a range of lock-related issues. The team of qualified and insured locksmiths can provide any lock service in London, from emergency lockouts to lock replacement and repair.