．When the power inverter and charger (PIC) power switch is in ”Charge” status, but the “Charge” LED indicator does not show and the fan doesn’t run at the same time? 
This may be because the utility power and the inverter power plug is not properly connected, or a blown up fuse of the inverter, check the connection of the utility power supply and replace the fuse with a new one with same rating.

．How do I check or change the fuses?

    Ligao Inverters contain internal or external fuses and should only be checked or replaced by a qualified electrical appliance repairer.

．Why does the fan only operate sometimes?

    Ligao inverters feature a temperature controlled automatic cooling fan that only operates when needed. This allows the inverter to run very quietly for most of the time. If the fan doesn’t work, it might be a loose contact of the fan cables to the main PCB or a defective fan or a failure PCB. You are advised to submit it to the service center.