Sungrow SG125HX User Manual page 89

User Manual
F F a a u u l l t t C C o o d d e e
036
037
038
039
D D e e s s c c r r i i p p t t i i o o n n
Temperature anomaly,
the temperature of the
power module is
excessively high and
out of the safe range.
Temperature anomaly,
the temperature of the
interior of the inverter is
excessively high and
out of the safe range.
Device anomaly
Low system insulation
resistance, which is
generally caused by
poor insulation to
ground of the module/
cable or by rainy and
damp environment.
9 Troubleshooting and Maintenance
C C h h e e c c k k m m e e t t h h o o d d
1. Check whether the inverter is directly
exposed to sunlight. If so, take some
shading measures.
2. Check and clean the air ducts.
3. Check whether there is 070 (fan
anomaly) alarm via the App. If so, replace
the fans.
1. Check whether the inverter is directly
exposed to sunlight. If so, take some
shading measures.
2. Check and clean the air ducts.
3. Check whether there is 070 (fan
anomaly) alarm via the App. If so, replace
the fans.
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.
Wait for the inverter to return to normal. If
the fault occurs repeatedly:
1. Check whether the ISO resistance
protection value is excessively high via the
App, and ensure that it complies with the
local regulations.
2. Check the resistance to ground of the
string and DC cable. Take correction
measures in case of short circuit or
damaged insulation layer.
3. If the cable is normal and the fault occurs
on rainy days, check it again when the
weather turns fine.
4. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
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