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6 TROUBLE SHOOTING
If you cannot solve a problem with the aid of this chapter, contact your local Mastervolt Service Centre. See
www.mastervolt.com. Make sure you have the following information present if you have to contact your local Mastervolt
Service Center to solve a problem:
Article and serial number; see section 1.4;
Malfunction
Possible cause
What to do
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 5).
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 5).
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 5).
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 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.
