Installation Manual

30
ChargeMaster Plus 12/75-3, 12/100-3, 24/40-3, 24/60-3 – User and Installation Manual
6 TROUBLE SHOOTING
The ChargeMaster Plus is protected against overload, short circuit, overheating and under and over
voltage. If a fault condition occurs, the LEDs indicate an error code. See section Status display for an
explanation.
CAUTION!
The ChargeMaster Plus is not protected against serious over voltage (>275VAC) on
the AC input.
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
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 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)