This application is a troubleshooting tool for FUJITSU GENERAL Air Conditioners (RAC/PAC, VRF) * , Wireless LAN Adaptor and Air To Water. It helps you to check air conditioner condition. Error code check, troubleshooting and sensors check are available. *: Applicable to RAC/PAC models with new serial communication method(4th digit of model code is "G" or "H" for example AS*"G"--, or AU*"H"--). Models with old serial communication method are not applicable(some models support). For VRF, models V