Fault Codes:
Sany SY485H E704
Fault Description:
The relay of the alarm light (sound) is abnormal
Fault Cause:
When the ON/OFF electromagnetic coil voltage anomaly command is ON, the voltage threshold (15V) is below and remains above the set time (0.1s); when the command is OFF, the voltage threshold (3V) is above and remains above the set time (0.1s)
