SPF 5000 ES Service manual
Battery under temperature
5.3 Trouble shooting according to fault indication
Explanation / Possible cause
Unit shuts down
automatically
during startup
process.
LCD/LEDs and
buzzer will be active
for 3 seconds and
then complete off.
The battery voltage is too low
(<1.91V/Cell)
1. Re-charge battery.
2. Replace battery.
No response after
power on.
1. The battery voltage is far too
low. (<1.4V/Cell)
2. Battery polarity is connected
reversed.
1. Check if batteries and the
wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the
unit works in
battery mode.
Input voltage is
displayed as 0 on
the LCD and green
LED is flashing.
Input protector is tripped
Check if AC breaker is tripped
and AC wiring is connected
well.
Insufficient quality of AC power
(Shore or Generator)
1. Check if AC wires are too
thin and/or too long.
2. Check if generator (if
applied) is working well, or
check if input voltage range
setting is correct (UPS or
Appliance)
Set Solar power as the priority of
output source
Change output source priority
to Utility first.
When the unit is
turned on, internal
relay is switched
on and off
repeatedly.
LCD display and
LEDs are flashing.
Check if battery wires are
connected well.
Buzzer beeps
continuously and
red LED is on.
Overload error. The inverter is
loaded with more than 110%
load and time is up
Reduce the connected load
by switching off some
equipment.
Check if wiring is connected
well and remove abnormal
load.