To unlock the LOC (Lock) display on a Hitachi air conditioner, you can follow these general steps:
Locate the control panel: Find the control panel of your Hitachi air conditioner. It is usually located on the front of the indoor unit.
Look for the lock symbol: Check the display or the buttons on the control panel for any lock symbol or indication. It may be labeled as "LOC" or "Lock."
Press and hold the appropriate button: Press and hold the button associated with the lock symbol for a few seconds. This action should unlock the control panel. The specific button to press may vary depending on the model of your Hitachi air conditioner. Common buttons for unlocking include the "Mode," "Temp Up," or "Temp Down" buttons.
Check the display: After holding the button, check the display to see if the LOC indication disappears. If it does, it means the control panel is now unlocked.
If the above steps don't work, I recommend referring to the user manual of your specific Hitachi air conditioner model. The manual will provide accurate instructions on how to unlock the LOC display or troubleshoot any lock-related issues.