What is the air conditioner fan upgrade process?
The first step is to assess your air conditioner and the existing fan motor. If it has a standard 5.5
inch diameter motor, then the process is very simple. You can purchase the upgraded motor from Amazon. The
differences in the replacement procedure are as follows:
For the ECM upgrade motor, the motor must be programmed prior to putting on the fan blade or installing it
in the unit. The motor comes with a programming cable that is attached to the motor connector and then
plugged into a standard 115 volt outlet. The motor will cycle through its four modes of operation in about
90 seconds. When you see the motor rotating in the proper direction and at the proper speed, you unplug
the programming cable from the outlet and the motor will then be programmed to operate in that mode.
(Don't worry if you do not get it right the first time as the process can be repeated as many times as you
After the motor is mounted, you need to remove the rubber drain plugs from the end of the motor that is in
the lower position. Route the wires to the control box and then plug them into the external surge
protector. Connect the L1 and L2 leads from the surge protector to the unit's contactor and the ground
wire to a suitable equipment ground connection.