Steps to follow
Is the door in the open or locked position?
If locked and you have other means of accessing the property, please use this and await a service visit from an engineer or an installer. If open, please go to the next question.
Can you lift the handle and turn the key?
If no, please try using lubrication. Apply this to all the locks and try and move the handle up and down to free up the mechanism. If yes, close the door as normal whilst lifting the door at the same time and confirm the door has locked. It may be necessary to use more force than normal to ensure all locks enter the lock position. If possible, whilst raising the handle take the weight of the door on the handle.
Is the door now locked?
If yes, please limit the use of this door and await a service visit. If no, please follow the simple adjustment guides below to alter the position of the door.