GREE Photovoltaic Direct-driven Inverter Multi VRF Units
190
■Communication of wired controller touch button board and display board IIC is abnormal;
■Read and write of wired controller memory chip IIC is abnormal (when memory chip is existed);
Troubleshooting:
2.3.4.51 “dC” Capacity DIP switch setting error
Error display:
IDU wired controller and IDU receive light board will display
Error judgment condition and method:
If capacity DIP switch is set to the wrong position, report the error.
Possible reason
■Capacity DIP switch is set to the wrong position
■Detecting circuit is abnormal
Troubleshooting:
2.3.4.52 “dL” Air outlet temperature sensor error
Error display:
IDU wired controller and IDU receive light board will display
Error judgment condition and method:
Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge
the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds
continuously, report the error
Possible reason
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