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SECTION 5 | Protections & Troubleshooting
TABLE 5.1 TROUBLESHOOTING GUIDE
Symptom
Possible Cause Remarks / Remedy
Load Status LED ( 3, Fig
2.1 ) is fast blinking Red
@ 4Hz.
Load has been
disconnected.
Load has been disconnected due
to short circuit.
- Read Section 5.1.5 for details Remove the cause of short circuit.
- Reset by manually pressing Load On/Off
Button ( 4, Fig 2.1 ) for 8 to 10 sec.
- Read Section 5.1.5 for details.
• PV Status LED ( 1, Fig
2.1 ) is blinking Green
• Battery Status LED
( 2, Fig 2. 1) is blinking
Orange
• Load Status LED ( 3, Fig
2.1 ) is blinking Red
Controller has stopped
working.
Heat sink of the
controller > 85°C
- Read Section 5.12 for details Check reasons for overheating. Improve
ventilation and ensure proper cool airflow
over heat sink surface
- Will reset automatically when the unit
cools down and temperature drops
to < 75°C
Battery Status LED ( 2. Fig
2.1 ) is slow blinking Red
(1 Hz)
Charging has stopped
Battery temperature has ex-
ceeded 65
° C
NOTES:
1. Refer to Section 5.1.12
2. When battery temperature
sensing is being done indirectly
by the built-in temperature sen-
sor, this trigger temperature of
65
° C will be the temperature
inside the controller
3. When optional Temperature
Sensor Model MSK-TS is used,
the above trigger temperature of
65
° C will be the actual battery
temperature
Refer to Section 3.4.4.3
1. When external optional Battery Tem-
perature Sensor Model MSK-TS is not
being used, battery temperature sensing
will be done indirectly by the tempera-
ture sensor inside the controller.
• Check reasons for overheating of the
controller
• The unit will reset when the controller
cools down to < 55 ° C
2. When external optional Battery Tem-
perature Sensor Model MSK-TS is being
used, the internal temperature will be
disabled.
• Check reasons for overheating of the
battery
• The unit will reset automatically when
the battery cools down to < 55 ° C
• Solar Panel Status LED
(1, Fig 2.1) is slow
blinking Green
• Battery Status LED is
blinking Red
• Load Status LED (2, Fig
2.1) is blinking Red
Controller has stopped
working
1. "System Voltage Error". See
Section 5.1.14. Battery voltage
does not match the battery volt-
age specification of 8-32VDC for
the controller, or
2. Solar Panel has been con-
nected before connecting the
battery 1. Check the battery voltage is within the
range of 8-34VDC.
• Press Load On/Off Button to clear the
malfunction.
2. Remove solar panel and battery con-
nections. Reconnect by connecting the
battery first and then the solar panel.
No LED indications Battery voltage is < 8V Charge the battery to voltage > 8V using
another AC charger.