PowerWalker Inverter 3000 PSW - Manual (Page 20)

17
EN
TROUBLE SHOOTING
Problem Possible Causes Remedy
No LCD display
1. Battery Weak 1. Re-charge battery
2. Battery defective (can't be
charged)
2. Battery replacement
3. Power switch is not pressed 3. Press and hold power switch
4. Battery polarity reversed, can’t
start up the unit
4. Sent back for repair
Mains normal but
works in inverter
mode
1. AC Input missing 1. Check AC input connection
2. Input protector is effective 2. Reset the input protector
Mains normal but
can’t works in
inverter mode
1. Battery disconnected 1. Connect batteries
2. Low batteries 2. Recharge batteries or change new batteries
Alarm buzzer
beeps
continuously
1. Overload(fault code: F2)
1. Verify that the load matches the capability
specified in the specs
2. Output short circuit(fault code: F3) 2. Check wiring or remove abnormal load
3. Over temp(fault code: F5) 3. Move away barrier in front of airflow inlet
4. Over charger(fault code: F1) 4. Restart the unit
5. Over voltage(fault code: F1)
5. Turn down the DC input voltage below the high
DC input shut-down recovery
6. Fan fault(fault code: F4)
6. Check if something block the fan, if not replace
the fan
7. DC voltage under the low DC
shut-down(fault code: F0)
7. Make sure mains is normal to recharger the
battery if not switch the power off until mains is
normal
8. Output abnormal(fault code: F6) 8. Send back for repair
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