Mastervolt Mac Plus 2/12-50 - Page 20

20
MAC-PLUS
Malfunction Possible cause What to do
High ambient
temperature
Nothing; if ambient temperature is more
than the setting limit, the charge current is
automatically reduced.
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
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
Slow or no
MasterBus
communication.
Error in the MasterBus
wiring.
Check the MasterBus cables.
No terminating device
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.