12/75-3, 12/100-3, 24/40-3, 24/60-3 – User and Installation Manual
6 TROUBLE SHOOTING
If you cannot solve a problem using the fault finding table, contact your supplier or Mastervolt. Make sure you have the part
and serial number at hand.
No output voltage
and/or current
No AC input Check AC wiring, check remote control panel.
AC input voltage too low (< 75VAC) 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 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.
Wrong setting of the charge voltage Check settings (see chapter 4).
Charge current too low 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 the
setting limit, the charge current is automatically
reduced.
Low AC input voltage. At lower AC input
voltages, the charge current is reduced.
Check AC input voltage.
Batteries not fully
charged
Charge current too low See “Charge current too low” in this table.
Current to load is too high Reduce load taken from the batteries.
Charge time too short 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.
Wrong setting of the charge voltage Check settings (see chapter 4).
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.
Charge voltage too high Check settings (see chapter 4).
No EasyView 5 display
function.
Display is switched off. Switch on display, refer to display manual.
Error in the wiring. Check the MasterBus cables.
Slow or no MasterBus
communication.
Error in the MasterBus wiring. Check the MasterBus cables.
No MasterBus Terminator placed at the
ends of the network.
MasterBus needs a terminating device on both
ends of the network. Check if connected.
MasterBus network is configured as a ring
network.
Ring networks are not allowed. Check the
connections of the network.
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