Trouble Shooting - MPP Solar 3KVA User Manual

TROUBLE SHOOTING

Problem LCD/LED/Buzzer
Unit shuts down LCD/LEDs and buzzer
automatically will be active for 3
during startup seconds and then
process. complete off.
No response after
No indication.
power on.
Input voltage is
displayed as 0 on the
LCD and green LED is
flashing.
Mains exist but the
unit works in
battery mode. Green LED is flashing.
Green LED is flashing.
When the unit is
turned on, internal LCD display and LEDs
relay is switched on are flashing
and off repeatedly.
Fault code 07
Fault code 05
Fault code 02
Buzzer beeps
continuously and
red LED is on.
Fault code 03
Fault code 01
Fault code 06
Fault code 08/09
Explanation / Possible cause
The battery voltage is too low
(<1.91V/Cell)
1. The battery voltage is far too
low. (<1.4V/Cell)
2. Battery polarity is connected
reversed.
Input protector is tripped
Insufficient quality of AC power.
(Shore or Generator)
Set "Solar First" as the priority of
output source.
Battery is disconnected.
Overload error. The inverter is
overload 110% and time is up.
Output short circuited.
Internal temperature of inverter
component is over 100°C.
Battery is over-charged.
The battery voltage is too high.
Fan fault
Output abnormal. (Inverter
voltage is lower than 90Vac or
higher than 140Vac.)
Internal components failed.
26
What to do
1. Re-charge battery.
2. Replace battery.
1. Check if batteries and the
wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Check if AC breaker is tripped
and AC wiring is connected
well.
1. Check if AC wires are too
thin and/or too long.
2. Check if generator (if
applied) is working well or if
input voltage range setting is
correct. (UPSAppliance)
Change output source priority
to Utility first.
Check if battery wires are
connected well.
Reduce the connected load by
switching off some
equipment.
Check if wiring is connected
well and remove abnormal
load.
Check whether the air flow of
the unit is blocked or whether
the ambient temperature is
too high.
Return to repair center.
Check if spec and quantity of
batteries are meet
requirements.
Replace the fan.
1. Reduce the connected
load.
2. Return to repair center
Return to repair center.