Product Manual

9
EN NL FR DE ES SE Appendix
4. Troubleshooting
Problem
Possible cause
Solution
Charger does
not function
Reversed PV connection
Connect PV correctly
No fuse inserted
Insert 20A fuse (models 75/10,
75/15, 100/15) or 25A fuse
(model 100/20)
Blown fuse
Reversed battery
connection
1. Connect battery correctly
2. Replace fuse
The battery is
not fully charged
A bad battery connection
Check battery connection
Cable losses too high
Use cables with larger cross
section
Large ambient temperature
difference between charger
and battery (T
ambient_chrg
>
T
ambient_batt
)
Make sure that ambient
conditions are equal for
charger and battery
Only for a 24V system:
wrong system voltage
chosen (12V instead of 24V)
by the charge controller
Set the controller manually to
the required system voltage
(see section 1.9)
The battery is
being
overcharged
A battery cell is defect
Replace battery
Large ambient temperature
difference between charger
and battery (T
ambient_chrg
<
T
ambient_batt
)
Make sure that ambient
conditions are equal for
charger and battery
Load output
does not
become active
Maximum current limit
exceeded
Make sure that the output
current does not exceed 15A
DC load in combination with
capacitive load (e.g.
inverter) applied
Disconnect DC load during
start-up of the capacitive load
Disconnect AC load from the
inverter, or connect inverter as
explained in section 3.6
Short-circuit
Check for short-circuit in the
load connection