SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
User Manual
Copyright © Huawei Technologies Co., Ltd.
Low
Insulatio
n
Resistan
ce
1. The PV string is short-circuited to
PE.
2. The PV string has been in a moist
environment for a long time and the
power cable is not well insulated to
ground.
1. Check the impedance between
the PV string and the PE cable.
If a short circuit occurs, rectify
the fault.
2. Check that the PE cable for the
SUN2000 is correctly
connected.
3. If you are sure that the
impedance is less than the
default value in a cloudy or
rainy environment, reset
Insulation resistance
protection.
1. The SUN2000 is installed in a place
with poor ventilation.
2. The ambient temperature exceeds
the upper threshold.
3. The SUN2000 is not working
properly.
1. Check the ventilation and
ambient temperature at the
SUN2000 installation position.
If the ventilation is poor or the
ambient temperature exceeds
the upper threshold, improve
the ventilation and heat
dissipation.
2. If the ventilation and ambient
temperature both meet
requirements, contact Huawei
technical support.
An unrecoverable fault occurs on a
circuit inside the SUN2000.
Turn off the AC output switch and
DC input switch, and then turn
them on after 15 minutes. If the
fault persists, contact Huawei
technical support.
The upgrade ends abnormally.
1. Perform an upgrade again.
2. If the upgrade fails several
times, contact your dealer.
1. The privilege certificate has entered
the grace period.
2. The privilege feature will be invalid
soon.
1. Apply for a new certificate.
2. Load the new certificate.
1. The flash memory is insufficient.
2. The flash memory has bad sectors.
Turn off the AC output switch and
DC input switch, and then turn
them on after 15 minutes. If the
fault persists, replace the
monitoring board or contact
Huawei technical support.
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