Mastervolt ChargeMaster Plus 12/35-3

26
ChargeMaster Plus 12/35-3, 12/50-3, 24/20-3, 24/30-3 – 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 Advanced Systems
Group. 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)
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)