Hi there. We are living in a three level townhouse which we occupy the 2nd and third floors. The main floor is about a 800 square foot apartment that is occupied by some other people but both air conditioning units are sitting on our balcony which is on the second floor.

The people's a/c downstairs is set to 20C or 68F (which is extremely low) It should take a max of half an hour to cool their place, but the unit runs continuously even when its not hot outside. When we check the unit, the pipes are frozen in the back. My landlord seems to think there is no problem but there has to be.

Can someone please tell me if this is normal and that I'm not crazy??!! Thanks so much