Why can’t I switch on the Aircon using the remote control?
If you are facing this issue, then high chance the problem lies in either the remote controller or the indoor printed circuit board. Advice is to try the remote control on other aircon units and if it works, then your remote control is fine. If the fault lies in the printed circuit board, you need to engage a qualified technician to do repair on the printed circuit board.
Book an appointment with Kool Aircon specialist to get it checked and troubleshoot the problem.
Or it could be time for an aircon servicing to maintain your unit.