11.5
Replace DC fuse
↻
Ensure there is no DC voltage present.
.
NOTE: Do not damage or remove the side insulator fastening!
1. Loosen and remove the DC fuse (F1) on the upper and lower lock nuts by hold-
ing the support bolt against it [ W35] against it [ W17].
2. Insert the new specified DC fuse in the intended position and fasten it with the
lock nuts by holding the support bolt [ W35] against it [ W17 / 44.25 In-Ibs ].
3. DC fuse replaced. Continue connecting the battery.
1
3
2
4
Fig. 76:
Replace DC fuse
11.6
Faults
11.6.1 Procedure
DANGER
Lethal voltages are still present in the connections and cables of the device even after the device
has been switched off and disconnected!
Severe injuries or death may occur if the cables and/or terminals/busbars in the device are touched.
1. If a fault occurs, notify an appropriately authorized and qualified electrician or KACO new energy GmbH
Service.
2. The operator can only carry out actions marked with a B.
11.6.2 Rectifying faults
B = Action of the operator; E = The indicated work may only be carried out by an authorized electrician! ; K =
The indicated work may only be carried out by a service employee of KACO new energy GmbH!
Fault
Possible cause
Explanation/remedy
By
The LEDs do not light up Grid voltage not avail-
able
› Check whether the DC and AC voltages are within the permit-
ted limits (see Technical Data)
E
› Notify KACO Service.
E
The device stops feeding
into the grid shortly af-
ter being switched on,
even though there is
sunlight present.
Defective circuit-break-
ers in the device
If the circuit-breakers are defective, the device will recognize
this during the self-test.
K
› Ensure that there is sufficient PV generator power.
› If the grid separation relay is defective, have it replaced by
KACO Service.
› Notify KACO Service.
E
Device is active but not
connected to the grid. A
grid fault is displayed on
the status LED.
Grid-feed is interrupted
due to a grid fault.
Due to a grid fault (over/undervoltage, over/underfrequency),
the device stopped the feed-in process and disconnected from
the grid for safety reasons.
› Change the grid parameters within the permitted operating
limits (see the "Start-Up" section).
E
The grid fuse trips.
The grid fuse capacity is
too low.
In case of a high level of solar radiation, the inverter exceeds its
rated current for a short period, depending on the PV genera-
tor.
› Select the capacity of the device’s pre-fuse to be somewhat
higher than the maximum feed-in current (see the "Installa-
tion" section).
E
› Contact the grid operator if the grid failure continues to oc-
cur.
E
11 | Maintenance and troubleshooting
Manual
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