Mitsubishi VFD PROGRAMMER FR-PU07 & error code and easy troubleshooting 

FR-PU07/FR-PU07BB supporting models If a product assembled before the above date is connected when the inverter power is OFF, “MITSUBISHI” appears on the liquid crystal display screen and it is inoperative. If a product assembled before the above date is connected when the inverter power is ON, “PU07BB/COMPATIBILITY/ ERROR” appears on the liquid crystal display screen and it is inoperative. If a product assembled before the above date is connected.

“PU07BB/COMPATIBILITY/ERROR” appears on the liquid crystal display screen and it is inoperative regardless of ON/OFF of the inverter power. Some parameter names displayed are different from those of the FR-PU07. The FR-PU07 cannot be directly installed in the inverter unit. The battery mode is not available. Functions other than the battery mode are the same as those of FR-PU07.  The FR-A500/F500/E500/S500(E) series are included. Model FR-PU07 FR-PU07BB A800 series