GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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■Connected wired controller quantity or address setting is improper
■Controller is abnormal
Troubleshooting：
3.4.6 ―E8‖ Indoor Fan Error
Error display: IDU wired control and IDU receiver light board will display E8
Error judgment condition and method:
Check if the rotation speed of IDU is too slow, or it stops rotation, or protection signal of outdoor fan is transferred. If yes, it is
judged that indoor fan protection occurs
Possible reason:
■Motor stops operation or it is blocked
■IDU mainboard is abnormal;
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