MPP Solar 2424LV-HS, User Manual

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TROUBLESHOOTING
Problem LCD/LED/Buzzer Explanation / Possible cause What to do
Unit shuts down
automatically
during startup
process.
LCD/LEDs and buzzer
will be active for 3
seconds and then
completely off.
The battery voltage is too low
(<1.91V/Cell) 1. Re-charge the battery.
2. Replace the battery.
No response after
power on.
No indication.
1. The battery voltage is far too
low. (<1.4V/Cell)
2. Battery polarity is connected
reversely.
1. Check if batteries and the
wiring are connected well.
2. Re-charge the battery.
3. Replace the 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.
Green LED is flashing. 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 if
the setting range of input
voltage is correct.
(UPS

Appliance)
Green LED is flashing. Set “Solar First” 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
Battery is disconnected.
Check if battery wires are
connected well.
Buzzer beeps
continuously and
red LED is on.
Fault code 07
Overload error. The inverter is
overload by 110% and time is up.
Reduce the connected load by
switching off some
equipment.
Fault code 05
Output short circuited.
Check if wiring is connected
well and remove abnormal
load.
The temperature of internal
converter is over 120°C. (Only
available for 1-3KVA models.)
Check whether the air flow of
the unit is blocked or whether
the ambient temperature is
too high.
Fault code 02
The internal temperature of the
inverter is over 100°C.
Fault code 03
Battery is over-charged. Return to repair center.
The battery voltage is too high.
Check if spec and quantity of
the batteries meet the
requirements.
Fault code 01 Fan fault Replace the fan.
Fault code 06/58
Output abnormal (Inverter voltage
is lower than 190Vac or is higher
than 260Vac)
1. Reduce the connected
load.
2. Return it to repair center
Fault code
08/09/53/57
Internal components failed. Return it to repair center.
Fault code 51 Over current or surge.
Restart the unit, if the error
happens again, please return
it to repair center.
Fault code 52 Bus voltage is too low.
Fault code 55 Output voltage is unbalanced.
Fault code 56
Battery is not connected well or
fuse is burnt.
If the battery is connected
well, please return it to repair
center.