Specifications

INVO SERIES INVERTER/CHARGER
INSTALLATION & OPERATING MANUAL
Manual No. INVO-1 Page 18 08/11 invo-man
TROUBLESHOOTING
Problem Possible Causes Remedy
No LCD display
1. Battery Weak
<35V for 5048H
<70V for 5096H
1. Re-charge battery
2. Battery defective
(can't be charged)
2. Replace Battery
3. Power switch is not pressed 3. Press and hold power switch
4. Battery polarity reversed
Can’t start up the
inverter/charger
4. Return to UNIPOWER for repair
Mains normal but
operates in inverter mode
1. AC input missing 1. Check AC input connections
2. Input breaker triggered 2. Reset the input breaker
Alarm buzzer beeps
continuously
1. Overload
1. Verify that the load matches the capability
specified
2. Output short circuit 2. Check wiring or remove abnormal load
3. Over temp 3. Remove any obstruction in front of airflow inlet
4. Over charger 4. Restart the inverter/charger
5. Over voltage
5. lower the DC input voltage under the high DC
Input shut-down recovery:
58.0±1.2Vdc for 5048H
116.0±2.4Vdc for 5096H
6. Fan fault
6. Check for any fan obstruction, if not fan should
be replaced
7. Back-EMF 7. Check the AC Input and output wire connection
8. DC voltage under the low
DC shut-down
8. Make sure mains is normal to recharge the
battery if not switch the power off until mains is
normal
Back up time is
shortened
1. Overload 1. Remove some non-critical load
2. Battery voltage is too low 2. Charge battery for 8 hours or more
3. Battery bank is too small 3. Increase battery bank capacity