Troubleshooting
EcoBoost MPPT Operator’s Manual
39
38
5.0
Firmware Update Failure
The firmware update was not successfully programmed. The
controller will not indicate the full power-up LED sequence
of G-Y-R when power to the controller is reset. Instead, the
controller will display green, and then stop on yellow. The
yellow LED will continue to be lit and the controller will not
complete start up or begin charging.
Re-try the firmware update. The firmware must be
successfully loaded before the controller will start up.
SOLID CHARGING STATUS LED with SELF-TEST (R-Y-G)
SOC FAULTS
Verify that nothing has been mis-wired. If not, the error is
likely critical. Contact an authorized Morningstar dealer for
support.
Fault
Charging Status LED
Battery SOC LEDs
PV FET Short
Solid red
R-Y-G sequencing
Load FET Short
Solid red
R-Y-G sequencing
Load FET Open
Solid red
R-Y-G sequencing
Damaged local
temperature sensor
Solid red (only if RTS
is invalid)
R-Y-G sequencing
Damaged heatsink
temperature sensor
Solid red
R-Y-G sequencing
Software
Solid red
R-Y-G sequencing
RE-SETTABLE
SELF-TEST (R-Y-G) SOC FAULTS
Fault
-
Battery SOC LEDs
Custom Settings Edit
-
R-Y-G sequencing
DIP Switch Change
-
R-Y-G sequencing
5.2 Battery Charging and Performance Issues
Problem:
No LED indications, controller does not appear to be
powered
Solution:
With a multi-meter, check the voltage at the battery
terminals on the EcoBoost MPPT. Battery voltage must be
10 vdc or greater. If the voltage on the battery terminals of
the controller is between 10 and 35 vdc, and no LEDs are lit,
contact your authorized Morningstar dealer for service.
If no voltage is measured, check wiring connections, fuses,
and breakers.
Problem:
The EcoBoost MPPT is not charging the battery.
Solution:
Check the three (3) battery SOC LEDs. If they are flashing in
a sequence, see Section 4.5 LED indications of this manual
to determine the cause. A metered model, an RM-1 meter,
or MSView PC software will display active faults and alarms.
If the LED indications are normal, check the fuses,
breakers, and wiring connections in the power source wiring.
With a multi-meter, check the array voltage directly at the
EcoBoost MPPT solar input terminals. Input voltage must be
greater than battery voltage before charging will begin.
Problem:
Controller makes buzzing and humming noises.
Solution:
No action is required. This is expected due to magnetic
resonance and circuit switching.
If troubleshooting does not correct the problem, please
refer to Morningstar's Warranty Claim Procedure in
Section 6.
