Gree GMV5E Series Service Manual page 197

GREE
Troubleshooting:
2.2.4.75 "H0" Fan drive board error
Error display: IDU wired controller will display
Error judgment condition and method:
Check the error code on IDU wired controller. If IDU wired controller displays H0, you should also
check the error code on nixie tube of ODU main control board. Judge the detailed error of fan drive board
according to the error code on main control board and arrange troubleshooting accordingly.
Possible reason：
■Fan drive module reset protection (Nixie tube on ODU main control board displays H3)
■Fan drive temperature sensor error (Nixie tube on ODU main control board displays H7)
■Fan drive IPM high temperature protection (Nixie tube on ODU main control board displays H8)
■Fan drive current detecting circuit error (Nixie tube on ODU main control board displays HC)
■Fan drive charging circuit error (Nixie tube on ODU main control board displays HF)
■Inverter fan non-synchronism protection (Nixie tube on ODU main control board displays H9)
■Inverter fan startup failure (Nixie tube on ODU main control board displays HJ)
Troubleshooting:
Step one: Check IDU wired controller error code
Step two: Also check the error code on nixie tube of ODU main control board
Step three: Arrange troubleshooting according to the error code displayed on ODU nixie tube
(Detailed troubleshooting steps refer to the corresponding error)
2.2.4.76 "H1" Fan drive board operation error
Error display: IDU wired controller will display
Error judgment condition and method:
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
193