Sungrow SG33CX User Manual

9 Troubleshooting and Maintenance User Manual
74
Fault
code
Description
Check method
070
Fan alarm
1. Check whether the fans operate normally
and are blocked by sundries. If they are
blocked, clear the sundries.
2. If a fan does not operate normally, stop and
disconnect the inverter to replace the fan.
071
AC-side SPD
alarm
Check the SPD, and replace it if necessary.
072
DC-side SPD
alarm
076
Device anomaly
Wait for the inverter to return to normal.
Disconnect the AC and DC switches, and
reconnect the AC and DC switches 15
minutes later to restart the inverter.
If the fault still exists, contact Sungrow
Service.
078-081
PVx abnormal
1. Check if the xth PV string needs to be
connected.
If not, ignore the alarm; and
If so, check the connection status and make
sure it is connected reliably.
2. Check if the xth DC fuse is damaged. If so,
replace the fuse.
3.If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 078 to code 081 are
corresponding to PV 1 to PV 4 respectively.
087
Electric arc
detection module
abnormal
The inverter can operate normally.
1. Check whether the related cable
connection and terminals are abnormal, and
check whether the ambient environment is
abnormal. If so, remove the corresponding
abnormity.
2. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.

Sungrow SG33CX Specifications

General

Model	SG33CX
Manufacturer	Sungrow
Rated Power	33 kW
Max DC Voltage	1100 V
Max Efficiency	98.7%
Start Voltage	200 V
Total Harmonic Distortion	< 3%
Power Factor at Rated Power	1
DC Connection Type	MC4
Allowable Relative Humidity Range	0 - 100%
Operating Altitude	4000 m
MPPT Voltage Range	200 V - 1000 V
AC Voltage Range	310 V - 480 V
Rated Grid Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading to 0.8 lagging
Operating Ambient Temperature Range	-25 °C ... +60 °C
Communication	RS485