MANUFACTURER'S BULLETINS
Applying Thermal Paste Correctly This bulletin is for properly applying Thermal Paste to the Side Discharge Inverter Boards but the steps for applying thermal paste in this bulletin, adapted to the board you are installing, apply to most inverter boards that attach to a heat sink.
R32 Refrigerant Detection System (RDS) Control Board and Sensor Troubleshooting -- The following troubleshooting guide should be used to determine whether there is an RDS board failure, sensor failure, or normal operation. Before replacing the RDS control board, follow this troubleshooting procedure of the board and sensor.