4.1 System Maintenance
To maintain the controller
'
s performance it is recommended that the
following maintenance be carried out.
Ÿ
Make sure there is enough air flow around and behind controller
Ÿ
Ensure cooling fins are free of dirt or debris.
Ÿ
Check for any exposed wiring between solar panel and battery and also check the load
if applicable.
Ÿ
Check that indicators are working correctly and check for fault codes in data analysis
page,
repair faults if recorded
Ÿ
Check all terminal screws are tight and that there is no corrosion on terminals and
wiring
Ÿ
If the lightning arrestor has lost its efficiency replace with a new one in a timely manner.
4.2 Abnormality Display
No.
Error
display
Description
LED indication
1
2
3
4
5
6
7
9
11
12
EO
E1
E2
E3
E4
E5
E6
E8
E10
E13
No abnormality
Battery over-discharge
Battery
over
-voltage
Battery under-voltage warning
Load short circuit
Load overloaded
Over-temperature inside controller
Solar array overloaded
Solar array over-voltage
Solar array reverse polarity
ERROR indicator off
BAT indicator flashing slowly ERROR indicator steady on
BAT indicator flashing quickly ERROR indicator steady on
ERROR indicator steady on
LOAD indicator flashing quickly ERROR indicator steady on
LOAD indicator flashing quickly ERROR indicator steady on
ERROR indicator steady on
ERROR indicator steady on
ERROR indicator steady on
ERROR indicator steady on
8
E7
Battery over temperature (E7 and E16 are
different in that charging and discharging
have separate upper limit protection
temperature)
ERROR indicator steady on
13
E15
Battery not connected or lithium battery
feed protection
ERROR indicator steady on
14
E16
Battery over temperature (E7 and E16 are
different in that charging and discharging
have separate upper limit protection
temperature)
ERROR indicator steady on
16
E17
Over-temperature inside controller
ERROR indicator steady on
17
E20
Battery reverse polarity
ERROR indicator steady on
15
E18
BMS over-current protection
ERROR indicator steady on
