Mass Charger 24/50-2, 24/75, 24/75 (120V), 24/100, 3-24/100, 48/25, 48/50 – User and Installation Manual
8 TROUBLE SHOOTING
In case of a failure, the Mass Charger display shows an
error ‘code’ to help you find its source. See section 6.4
LED indicators, on page 15. If you cannot solve a problem
using the following fault finding table, contact your supplier
or Mastervolt. Make sure you have the part and serial
number at hand (See section 1.4, on page 3).
No output voltage
and/or current
Check AC wiring, check remote control panel.
AC input voltage too low (< 180VAC).
Check input voltage, check generator.
AC input frequency out of range.
Check input voltage, check generator.
Output voltage too low,
charger supplies
maximum current
Load that is connected to the batteries is
larger than charger can supply.
Reduce load taken from the batteries.
Batteries not 100% charged.
Measure battery voltage. After some time this will
be higher.
Batteries almost fully charged.
Nothing, this is normal when the battery is almost
fully charged.
High ambient temperature.
Nothing; if ambient temperature is more than 40°C
the charge current is automatically reduced.
Low AC input voltage. At lower AC input
voltages the charge current is reduced.
See Figure 8 on page 22.
Batteries not fully
charged
See “Charge current too low”.
Current to load is too high.
Reduce load taken from the batteries.
Use a battery charger with higher capacity.
Battery temperature too low.
Use the battery temperature sensor.
Defective or old battery.
Check battery and replace if necessary.
Batteries are
discharged too fast
Battery capacity reduced due to wastage or
sulphation, stagnation.
Charge and recharge a few times, this might help.
Check battery and replace if necessary.
Batteries are too warm,
gassing
Defective battery (short circuit in cell).
Check battery and replace if necessary.
Battery temperature too high.
Use the battery temperature sensor.
Check settings (see section 7.4 on page 16).
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