Gree GMV5E Series Service Manual page 191

GREE
Troubleshooting:
2.2.4.68 "FC" Compressor 2 current sensor error
Error display: ODU mainboard, IDU wired controller and IDU receive light board will
display
Error judgment condition and method:
Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if
the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Possible reason：
■Poor contact between circuit sensor and terminal in mainboard interface
■Small board of circuit sensor is abnormal
■Detecting circuit is abnormal
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
187