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8.
Troubleshooting
Code
Name
Description
Solution
ID01
GridOVP
The grid voltage is too high
If the alarm occurs occasionally, the possible
cause is that the electric grid is occasionally out
of range. HYD-ES inverter will automatically
return to normal operating status when the
electric grid’s back to normal.
If the alarm occurs frequently, check whether the
grid voltage/frequency is within the acceptable
range. If yes, please check the AC circuit breaker
and AC wiring of the HYD-ES inverter.
If the grid voltage/frequency is NOT within the
acceptable range and AC wiring is correct, but the
alarm occurs repeatedly, contact ZCS technical
support to change the grid over-voltage, under-
voltage,
over-frequency,
under-frequency
protection points after obtaining approval from
the local electrical grid operator.
ID02
GridUVP
The grid voltage is too low
ID03
GridOFP
The grid frequency is too high
ID04
GridUFP
The grid frequency is too low
ID05
BatOVP
The battery voltage is too high
If the alarm occurs occasionally, wait a while to
see if the problem is solved.
If the alarm occurs frequently, check whether the
battery overvoltage setting is inconsistent with
the battery specification.
ID07
GridLVRT fault
ID08
PVOVP
The PV voltage is too high
Check whether too many PV modules are
connected in a PV string, causing the PV string
voltage (Voc) to be higher than the maximum
input voltage allowed for the HYD-ES inverter.
ID09
HW_LLCBus_O
VP
LLCBus voltage is too high and has
triggered hardware protection
ID09- ID12 are internal faults of HYD-ES inverter,
switch OFF HYD-ES inverter, wait for 5 minutes,
then switch ON HYD-ES inverter. Check whether
the problem is solved.
If no, please contact ZCS technical support.
ID10
HW_Boost_OV
P
Boost voltage is too high and has
triggered hardware protection
ID11
HwBuckBoostO
CP
BuckBoost current is too high and
has triggered hardware protection
ID12
HwBatOCP
The battery current is too high and
has triggered hardware protection
