uPVC Door cannot be opened from outside

[yj6aa]

I am having trouble with our external uPVC front door, I can unlock / lock it from outside but cant open it. You can open an (un)lock it from from inside and the handle on the inside is fully functional.

When unlocking from the outside, the two bars from the top and bottom of the door disengage, but the door doesnt open. I have checked the handle on the outside and it seems that the door latch is not being pulled free when the handle is pulled down. I have noticed that the handles on both sides of the door are at different heights....

How easy is it to take the lock out and check the mechnism? Or any thoughts will be appreciated....

 

[masona]

How easy is it to take the lock out and check the mechnism?

Not easy, sounds like the side latch only need adjusting. If the door is under 10 yrs old then should be under warranty, if not then a job for the locksmith.