Kaco blueplanet 40.0 TL3, Instruction Manual, Page: 40 / 52

Maintenance/Troubleshooting
Page 40 Installation Instructions KACO blueplanet 32.0 TL3 / 40.0 TL3 / 50.0 TL3
Shutting down the inverter
5. Switch off the grid voltage by turning off the external circuit breakers.
6. Disconnect the PV generator using the DC isolator switch.
DANGER! The DC cables are still live.

Ensure that there is no voltage present on the grid connection terminals.
NOTE
The screw connections must be checked by installers at regular intervals to ensure they are tightened to
required torques (see page 7.3 on page 18).
9.4 Faults
9.4.1 Procedure
DANGER
Lethal voltages are still present in the terminals and cables of the inverter even after the inverter has
been switched off and disconnected.
Severe injuries or death may occur if the cables and terminals in the inverter are touched.

When a fault occurs, notify an appropriately authorised and qualifi ed electrician or KACO new energy
GmbH 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 Troubleshooting
B = Action of the operator
E = The indicated work may only be carried out by an authorised electrician.
K = The indicated work may only be carried out by a service employee of KACO new energy GmbH.
Fault
Cause of fault Explanation/remedy By
The display is
blank and the
LEDs do not light
up. Grid voltage not avail-
able

Check whether the DC and AC voltages are within the per-
mitted 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 sunlight
present. Faulty grid separation
relay in the inverter.
If the grid separation relay is defective, the inverter will recog-
nise this during the self-test.

Ensure that there is suffi cient PV generator power.
E

If the grid separation relay is defective, have it replaced by
KACO Service.

Notify KACO Service.
E
Table 4: Troubleshooting