TBB APOLLO MAXX Series, User Manual

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Apollo Maxx User Manual
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6.1.2 MPPT Fault
Fault Code Description Solution
17 The DC bus is over voltage Check the PV input voltage.
18 The battery is under voltage Check the battery voltage.
19
Hardware protection against DC bus over
voltage
Check the battery voltage and the
charger output voltage
20 Buck short circuit
Check if there is a short circuit at
the MPPT output.
21 The Buck 1 is over current
Check the MPPT output
connection. Restart the equipment,
contact the installer in case the
error still exists.
22 The Buck 2 is over current
23
The control board's temperature is too
high
Check fan ventilation.
24 The heat sink's temperature is too high Too high ambient temperature.
25 Abnormal auxiliary power supply
Restart the MPPT. Contact the
installer in case the error still exists.
26
Abnormal auxiliary power supply
(hardware)
27 Abnormal sampling
28 Abnormal ROM
6.2 Warning code
When inverter fault occurs, press the ESC button to view the warning code. The digital tube in the
middle of the LCD will display the warning code.
6.2.1 Inverter Warning
Warning Code Description Solution
01 The battery is over voltage Check the battery voltage.
02 The battery is under voltage Check the battery voltage.
03
The battery is under voltage
protection
Check the battery voltage.
04 Overload warning Reduce the loads.
05 Heat sink NTC fail Power off the inverter and check the