86
Fault code
Fault name
Corrective measures
59, 70–74, 76,
82, 83, 89, 77–
81, 216–218,
220–232, 432–
434, 500–513,
515–518, 635–
638, 900, 901,
910, 911, 996
System Alarm
1. The inverter can continue running.
2. Check whether the related wiring and terminal
are abnormal, check whether there are any for-
eign materials or other environmental abnormal-
ities, and take corresponding corrective
measures when necessary.
If the fault persists, please contact Sungrow
Power Customer Service.
264-283
MPPT Reverse
Connection
1. Check whether the corresponding string is of
reverse polarity. If so, disconnect the DC switch
and adjust the polarity when the string current
drops below 0.5 A.
2. Contact Sungrow Customer Service if the pre-
ceding causes are ruled out and the fault persists.
*The code 264 to code 279 are corresponding to
string 1 to string 20 respectively.
332-363
Boost Capacitor
Overvoltage Alarm
1. The inverter can continue running.
2. Check whether the related wiring and termi-
nals are abnormal, check whether there are any
foreign materials or other environmental abnor-
malities, and take corresponding corrective
measures when necessary.
If the fault persists, please contact Sungrow
Power Customer Service.
364-395
Boost Capacitor
Overvoltage Fault
Disconnect the AC and DC switches, and recon-
nect the AC and DC switches 15 minutes later to
restart the inverter. If the fault still exists, contact
Sungrow Customer Service.
9 Troubleshooting and Maintenance
User Manual
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