Mastervolt MasterShunt 500

TROUBLE SHOOTING
EN / MasterShunt / February 2011 23
14 TROUBLE SHOOTING
Please contact your local Mastervolt Service Centre
if you cannot correct a problem with the aid of the
malfunction table below. See www.Mastervolt.com
for an extended list of Mastervolt Service Centres.
Failure Possible cause What to do
Display has switched off Switch on display. No display function
Error in the network wiring Check wiring for errors.
No terminating device placed
at the ends of the network
MasterBus needs a terminating device on both
ends of the network. Check if available (See
section 4.2).
MasterBus network is
configured as a ring network
Ring networks are not allowed. Check the
connections of the network (Section 4.2).
T-connections in the
MasterBus network
Check if T-connections are made in the network.
T-connections are not allowed (see section 4.2).
Error in the wiring Check the MasterBus cables and terminating
devices (Section 4.2).
MasterView display shows
no MasterShunt
Display not set up to show all
devices
Check manual of the display.
No voltage on load side of
MasterShunt
Fuse blown Investigate the cause of the blown fuse. Then
replace the fuse (Section 5.5).
No accurate time
remaining function
Wrong setting of the nominal
battery capacity
Correct the battery capacity setting. See chapter
11: Battery.
Part of the load or the charger
is connected at the battery
side of the MasterShunt
Check whether all load and charger connections
are at the load side of the MasterShunt (see
section 5.2).
Wrong setting of the nominal
battery capacity
Correct the battery capacity setting. See chapter
11: Battery.
Self discharge of the batteries
which was not recorded by the
MasterShunt
Recharge the batteries for at least 24 hours.
State of Charge not
accurate
First time set up not done
(completely).
Enter the first set up values (see chapter 6).
New batteries installed. Nothing (wait 5-10 cycles). After installation two
charging cycles are needed to initiate the
calculations. With newly installed batteries the
charge efficiency may increase during the first 5-
10 cycles.
The MasterShunt Reversed
setting does not correspond to
the system installed.
Reset the MasterShunt and enter the Advanced
menu. See figure 13 in this manual. Select
Reversed if the installation is like MasterShunt (3).
If it is like (4), do not change the setting.
Calculated Charge
Efficiency Factor (CEF) is
under 75%
Batteries have been left
standing without being used
for a longer period.
Recharge the batteries up to 100%.
Battery is fully charged but
SOC function does not
show “100%”
Charging system has not met
the conditions for a fully
charged battery
See chapter 13.4 for an overview of the conditions
for a fully charged battery.
State of Charge does not
return to 100% after a long
period of charging
Wrong setting of the float
voltage
Lower the setting of the float voltage of the
MasterShunt by 0.1V. See chapter 11: Battery.
Wrong language is
displayed
Wrong setting of the language
at the MasterShunt
Adjust the language setting.
See chapter 11: Battery monitor.