Can a temple built in the wrong zone be treated?
Yes. However wrong the zone, merely correcting the direction of the deity corrects your condition; the full method is given in the next class.
Related questions
A wooden temple with elephant figures stands in the North-East. Is that fine?
Elephant figures should stand on something solid, not hang in the air. The temple can stay, but a temple with elephants is better placed in the West.
Can a mandir face North or West?
A North-facing mandir is fine; temples of God are often kept North-facing. A West-facing mandir is moderate.
Can a photo of God be put up in the Brahmasthan?
Yes, there is no problem in putting God's photo in the Brahmasthan, because it is the place of Brahma.
Do paintings or decorative idols of God also need correct placement?
Yes, they also represent a planet and should be placed correctly. A consecrated God's photo should face North or East, or West if that is not possible, but never South; South-facing is for the photos of ancestors who have left this world.
How can a puja room in the South-East be corrected?
If it holds a consecrated (pratishthit) idol, the idol should be moved. If the idol is not consecrated, there is no need to worry, as these rules apply to consecrated idols.
In my East-facing house the temple had to be on the North wall, so the gods face South; is that wrong?
Do not make the gods face South; it brings heaviness, for example interviews go well but give no result. Place them on the West wall instead so that they face East.