KACO XP10U-H4 - Manual (Page 42)

M a i n t e n a n c e / T r o u b l e s h o o t i n g
Page 42 Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD
CAUTION
Destruction of the DC connection
The connection terminals can be destroyed by arcing if disconnected under load.
› It is absolutely necessary that the shutdown sequence be carried out in the correct order.
Shutting down the inverter
1. Switch off the grid voltage by deactivating the external circuit breakers.
2. Disconnect the PV array using the DC disconnect.
DANGER! The DC leads remain live.
 Ensure that there is no voltage present on the grid connection terminals.
9.4 Faults
9.4.1 Procedure
DANGER
Lethal voltages are still present in the terminals and leads of the inverter even after the inverter has
been switched off and disconnected.
Severe injuries or death if the leads and terminals in the inverter are touched.
 When a fault occurs, notify an authorised electrician approved by the supply grid operator or KACO
new energy, Inc. Service.
 The operator can only carry out actions marked with a B.
 In case of power failure, wait for the system to automatically restart.
 Notify your electrician if there is an extended power failure.
9.4.2 Rectifying faults
Fault Cause of fault Explanation/remedy By
The display is
blank and the
LEDs do not
light up. Line voltage not
available  Check whether the DC and AC voltages are within the
permitted limits (see Technical Data).
E
 Notify KACO Service. E
The inverter
stops feeding
into the grid
shortly after
being switched
on, even though
there is irradi-
ance. Faulty grid
separation relay
in the inverter.
If the grid separation relay is defective, the inverter will
recognize this during the self-test.
 Ensure that there is suffi cient PV array power. E
 If the grid separation relay is defective have it replaced
by KACO Service.
 Notify KACO Service.
K
Table 5: Troubleshooting
O = Action of the operator
E = The indicated work must only be carried out by an authorised electrician.
K = The indicated work must only be carried out by a service employee of KACO new energy, Inc.