I visited my grandparent's house and they have the Pakistani style ups, the one made out of steel. Works really well but the problem is that when fans switch from wapda to ups they go to full speed. Like at the moment the fan is running at the slowest speed but when theyll shift to ups they go to full speed and moving the dimmer has no affect. Dimmers have been checked and replaced, the problem exists with all the fans in the house.