In the basement I removed the ceiling fan that was above the little bed and found a plastic fixture box which is not rated for fan support. The customer requested a fixture to be installed at that location and to move the new fan to the location above the other bed where an existing fan has been. After removing the other fan I found that the box is rated for fan support but was not bonded and drywall screws were being used to secure the box. I bonded the box and used 5/16 hex head screws before installing the fan. Upstairs in the loft the customer had another contractor install the fan and it stopped working. After removing the fan I found that it was not installed on the box, the box was not listed for fan support and they took the motor wire off the receiver and attached it to the receivers equipment ground causing irreversible damage to the receiver. I supplied and installed a new side mount fan rated box, assembled, installed the new fan and tested it via the switch and the remote