After long time no use the air conditioners, since last summber. Some wires inside the tow air conditioners were cut by mice - caused timer and swing motor broken.
On Monday, October 25, 2010 We invited an mechanician of air conditioner to come and repaire. Now the two air conditioners work properly as usual.
We are planing to use non poisonous no-rat adhesive to exterminate the rats in our class room.