Stop if the door cannot be secured
Do not force keys, handles or multipoint locks. External doors, fire doors and security hardware should be left safe and secure while repairs are arranged.
MOST LIKELY CAUSES
Start with alignment, fixings and the moving mechanism
Symptom variations Match the handle, latch or locking behaviour. ⌄
- Handle stays down
- Handle rises slowly
- Latch remains retracted
- Problem is worse when door is closed
- One side returns but the other does not
Quick checks Safe checks before dismantling anything. ⌄
- Test the handle with the door open.
- Loosen fixing screws slightly and retest.
- Remove handles and operate the latch spindle hole.
- Check spindle alignment.
- Look for rubbing around the handle rose.
Step 1 — Separate handle and latch faults Make the smallest safe correction and retest. ⌄
Test the latch and handles independently.
Step 2 — Correct binding Make the smallest safe correction and retest. ⌄
Realign the spindle and avoid overtightening fixings.
Step 3 — Replace the failed component Make the smallest safe correction and retest. ⌄
Fit a new spring cassette, handle set or latch as required.
Why the problem happens How alignment, wear and internal components affect operation. ⌄
The handle return depends on springs in the handle, latch or both. Binding or wear can overcome the available spring force.
Advanced checks Further diagnosis for persistent faults. ⌄
- Check spring cassette condition.
- Inspect latch follower wear.
- Confirm spindle is straight.
- Check handle roses are centred.
- Compare operation on both sides.
Tools and information needed Useful items for accurate checks. ⌄
- Screwdrivers
- Allen keys
- Pliers
- Replacement spindle
- Light lock lubricant
Parts that may need replacing Common hardware linked to this fault. ⌄
- Spring cassette
- Handle set
- Latch
- Spindle
- Fixing screws
When to call a professional Conditions that should end basic DIY diagnosis. ⌄
- The handle operates a multipoint lock.
- The door cannot latch securely.
- The mechanism is inside a fire or security door.
- The spindle is seized in the gearbox.
- Replacement requires door modification.
Frequently asked questions Common lock and handle questions. ⌄
Is the latch always the cause?
No. Many handles have their own return springs.
Can overtightening stop the handle returning?
Yes, it can clamp or distort the assembly.
Can I spray oil into the handle?
Use only a suitable light lubricant and avoid soaking the mechanism.