The roof membrane contractor came to inspected at 1230 hrs today. He found the big weed on roof and make cracked on the membrane above the E310. This cause make the water leakage down into the room. He found the rain water leakage into the room by the window frame also.
He has scheduled to fix the membrane above E310 on this Friday morning. But this work under warranty (from weed). For long term, he will send the quotation for fix as soon.
For the AC unit in E310, should be strong the preventive maintenance every month.