We have a a Yale Digital Door Lock YDM3109. I've been trying do the initial set up this evening. We're just going to use the pin feature, so I'm not bothered about the card set up.

The problem...

I'm unable to lock the door from the outside at all. On automatic lock mode, it doesn't lock automatically. On manual mode, from what I can see, all I need to do is place my palm on the keypad to lock it. This doesn't work either.

If I manually lock the door from inside. I am able to unlock the door from outside successfully by using the pin I set up. At least that's working.

I'm thinking it's a problem with the sensor.

Any help would be much appreciated. Thanks in advance.