Huawei SUN2000-2KTL-L0 User Manual page 70

SUN2000-(2KTL-5KTL)-L0
User Manual
Alarm ID Alarm Name
2062 Low Insulation
Resistance
2063 Overtemperature
2064 Device Fault
2065 Upgrade Failed
61440 Monitoring Unit
Faulty
Issue 01 (2018-08-30)
Alarm Possible Cause
Severity
Major Cause ID = 1

The PV string is
short-circuited to PE.
 The PV string is
installed in a moist
environment for a
long time.
Major Cause ID = 1

The SUN2000 is
installed in a place
with poor
ventilation.
 The ambient
temperature exceeds
the upper threshold.
 The SUN2000 is not
working properly.
Major Cause ID = 1–12
An unrecoverable fault
occurs on a circuit
inside the SUN2000.
Major Cause ID = 1-4
The upgrade does not
end normally.
Minor Cause ID = 1

The flash memory is
insufficient.
 The flash memory
has bad sectors.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestion
1. Check the impedance between
the PV array output and PE, and
eliminate short circuits and poor
insulation points.
2. Check that the SUN2000 PE
cable 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.
 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.
 If the ventilation and ambient
temperature both meet
requirements, contact your dealer.
Turn off the AC output switch and
DC input switch, and then turn them
on after 5 minutes. If the fault
persists, contact your dealer.
1. Perform an upgrade again.
2. If the upgrade fails several times,
contact your dealer.
Contact your dealer to rectify the
fault.
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