What if the door doesn't open? If there is a key, it won't turn.

How to deal with the key that can't be twisted:

1. Fill in lubricating oil: the key won't turn and the door won't open, probably because the keyhole is rusted. You can use the syringe with the needle removed to suck out the lubricating oil, and then inject it into the keyhole. When the lubricating oil completely enters the keyhole, insert the key and unscrew the door.

2. Brush cooking oil: the key won't open the door. Maybe the friction between the keyhole and the key is too great. At this time, you can brush a layer of cooking oil on the key and then insert it into the keyhole to try to open it. If not, take out the key again, oil it, repeat the operation for three times, and you can open the door.

3. Try again and again: if the key doesn't turn, you can't open the door. It may be that there are foreign objects such as pebbles or sawdust in the keyhole. You can insert the key repeatedly, twist it counterclockwise for three or four times, and you can open the door. If the key is broken, please ask the unlocking personnel to come to the door to unlock it.

4. dripping cold oil: the key won't turn and the door won't open. Maybe it's because the key is not inserted correctly. You can drop a few drops of cold oil on the key, and then try to insert the key again and twist it three or four times. Usually, you can open it.

5. Replace the door lock: the key can't be turned, and the door lock can't be opened. It may be that the door lock is damaged. You can use needle-nosed pliers to clamp out foreign objects in the door lock, or use a spare key to open the door lock.

6. Ask a professional: If all the above methods fail, you can ask a professional locksmith to come to your door.

I hope the above information will help solve your problem.