Dyness Tower T21 - 4 Maintenance; Trouble Shooting; Replacement of Main Components

Tower ESS User Manual
24
©Dyness reserves the copyright of this document.
4 Maintenance
Trouble shooting
DANGER
The battery system is a high voltage DC system. Must make sure that the grounding
surface of Tower is stable and reliable.
Please confirm that the battery system is switched off before connecting. Electric shock
and damage to the inverter may be caused if the battery is connected to the inverter
directly without being powered off.
Otherwise, the system cannot operate properly. The voltage of the battery is too high,
please pay attention to self-protection during measurement.
No.
Problem
Possible Reason
Solution
1
The battery has no
voltage output, and
“POWER ON”/
“POWER WAKE” LEDs
are off.
The BDU DC breaker is not
switched on.
Switch the BDU DC breaker
on.
The ON/OFF switch of the
BDU is not switched on.
Switch the ON/OFF switch
on.
Battery is in sleep mode.
Press and hold the WAKE
button for approx. 10s.
The fuse in the BDU is
faulty.
Replace the fuse.
Battery changes into
over-discharged
protection.
Charge the battery to leave
protection mode.
2
Battery has no voltage
output, but “POWER
ON”/“POWER WAKE”
LEDs are on.
The BDU relay is faulty.
Replace BDU.
3
When the battery is
connected to the
inverter, the DC
breaker trips Instantly.
Short circuit between
battery and inverter.
Check whether there is a
short circuit between battery
and inverter; Check if the
inverter is faulty.
4
Communication
failure between
battery and inverter.
Wrong battery type is
selected in the inverter
settings.
Select the correct battery
type in the inverter settings.
Replacement of Main Components
Replacing the Battery Controller (BDU)
WARNING