Troubleshooting - Mastervolt CombiMaster 12V/2000W 100A User And Installation Manual

30
CombiMaster 120V Series – User and Installation Manual

7 TROUBLESHOOTING

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.
Malfunction
No output voltage
and/or current
Output voltage too
low, charger
supplies maximum
current
Charge current too
low
Batteries not fully
charged
Possible cause
No AC input
AC input out of range (< 75VAC)
AC input frequency out of range
Thermal fuse has tripped
Overheating error
External breaker or GFCI (RCD)
has tripped
Inverter is off
Load connected to the batteries is
larger than charger can supply.
Batteries not 100% charged
Wrong setting of the charge
voltage
Batteries almost fully charged
High ambient temperature
Low AC input voltage. At lower AC
input voltages, the charge current
is reduced.
Charge current too low
Current to load is too high
Battery temperature too low
Defective or old battery
Wrong setting of the charge
voltage
What to do
Check AC wiring, check remote control
panel.
Check input voltage.
Check input frequency.
Check the load and reset the fuse (see
section 6.5).
Check whether the air flow of the
CombiMaster Inverter/Charger is blocked
or the ambient temperature is too high.
Reduce the connected load and let the
CombiMaster Inverter/Charger cool
down.
Check the external breaker at the AC
output (if applied).
Check the main switch or the remote
setting of the Inverter button.
Reduce load taken from the batteries.
Measure battery voltage. After some time
this will be higher.
Check settings (see chapter 5).
Nothing, this is normal when the battery
is almost fully charged.
Nothing; if ambient temperature is more
than the setting limit, the charge current
is automatically reduced.
Check AC input voltage.
See "Charge current too low" in this
table.
Reduce load taken from the batteries.
Use the battery temperature sensor.
Check battery and replace if necessary.
Check settings (see chapter 5).