There are various kinds of Genie garage door opener receivers and Genie model GR390-12 receiver is one of them. A receiver is an important part of a garage door as the receiver takes role to receive the signals sent by the remote or keypad. The remote and keypad model should be matched with the receiver or otherwise the garage door opener will not work as hoped. Genie model GR390-12 receiver is designed to receive signals from Genie remotes and keypads with 12 switches and work with 390 MHZ frequency.
Genie Screw Drive units Pro 88-S, Pro 98-S and Pro 90-S are Genie models that make use GR390-12 Genie garage door opener receiver. To make the receiver works, you have to set the 12 switches to set the fixed code signals to operate the door.
Here is the instruction of Genie garage door opener receiver GR390-12 model:
Disconnect any electrical connection to garage door opener. Unplug the opener and take away the lens cover of the light bulbs. There are six screws with one-six label, make a note of them. From screw one, you need to remove the U-shaped connector with white wire and leave the other wire as it is. From screw number two, remove the black wire and from screw number three remove the red wire.
Unscrew the retaining screws holding GR390-12 receiver box and put back the new receiver box in the exact place of the old one. Put back the white wire on screw one by sliding it around, the black wire connector around screw number two and red wire around screw number three and get all screws tightened.
Squeeze the two sides of box chasing to open the receiver box. Set the tiny 12 switches of the receiver by using the screwdriver in all up or all down as long as matching with the set of 12 switches inside the remote control.