Mastervolt MASS COMBI ULTRA Installation Manual page 21

Illuminating LEDs
Normal operation and warnings
None
(1) blinking
(2) blinking slowly
(2x/sec)
(2) blinking fast
(5x/sec)
(3) blinking slowly
(2x/sec)
(3) blinking fast
(5x/sec)
(4) red
(10) red
(11) blinking
(10) blinking red
Errors (MCU/MCP shuts down)
(4) and (10) red, (5)
yellow
(10) red, 8 and 9
yellow
(10) red, (8) yellow, (9)
off
(10) red, (8) yellow, (9)
off
(4) and (10) red
Permanent errors (manual reset required)
(4) and (10) blinking
fast red
(6) and (7) blinking fast
Monitoring a three-phase cluster
In MasterAdjust, on the monitoring tab of the L1 unit, first the data for the unit itself is shown. Next are the Cluster groups(L1, L2
and L3). Per phase, input and output data is shown. If more units are clustered per phase, their values are combined.
The list with AC outputs shows the values for the selected unit.
Mass Combi Ultra, Mass Combi Pro – Installation Manual Multiple Units
MasterBus alarm Explanation / Possible cause
The MCU/MCP is switched off
manually.
Error: solar voltage or current out
of range
Inverter is synchronizing voltage
and frequency to generator AC.
On Replica unit: normal
operation, Replica unit is detecting
AC mains
MB monitoring: ACin Error: generator input voltage or
Low quality frequency out of range
The inverter is synchronizing its
voltage and frequency to mains
AC
On Replica unit: normal
operation, Replica unit is detecting
AC gen
MB monitoring: ACin Error: mains input voltage or
Low quality frequency out of range
MB monitoring: Inverter in overload, inverted
Overload power exceeds 3500 W
Battery low Battery voltage low
Error in sec charger Internal Hardware error
Charging a low battery
Overtemperature Combi too hot. Restart when
alarm is over
Battery high Battery voltage too high, Combi
restarts when the alarm is over.
Temp sense error Temperature sensor sends a
wrong signal.
Batt temperature Battery hot, Combi restart when
alarm is over.
System error, Communication disturbed
Sync error, Configuration wrong
Config error
Overload Number of inverter overload
restart attempts exceeded.
System error Hardware issue
Install error Installation error
What to do
Switch on the MCU/MCP by means of
the main switch.
Check Solar input, refer to input
specifications in user manual.
Wait until the inverter is ready
synchronizing. After this, it will
activate the generator input.
No action required
Check generator voltage and
frequency, refer to generator input
specifications in chapter 8.
Wait until the inverter is ready
synchronizing. After this, it will
activate the mains input.
No action required
Check mains voltage and frequency,
refer to generator input specifications
in chapter 9 manual.
Check the load connected and
disconnect.
Stop inverting, start charging
Contact Mastervolt
Disconnect all DC loads
Check ventilation
Stop charging, check battery voltage
setting
Check battery sensor and its cable
Check Sync cables and connectors
Reduce the output loads, shut off and
on the MCU/MCP.
Switch off and on the MCU/MCP.
Correct installation, shut off and on
the MCU/MCP.
21