Error Code: EH 0A – Indoor EEPROM Parameter Error

Error Code: EH 0A – Indoor EEPROM Parameter Error

What this means:
This error means that the indoor unit’s main control chip cannot read its EEPROM — the memory chip that holds key configuration data. This prevents the system from operating normallyTS19.

Try this first (quick reset):

1. Turn off the power supply completely.

2. Wait 2 minutes.

3. Turn it back on and check if the error clears.

• If the error disappears — the system is functioning normally.

• If it remains — the EEPROM is not responding, and the board must be replaced.

Next steps (for technicians):

• Replace the indoor main PCB.

What you might need:

• Indoor PCB

Helpful tip:
The EEPROM chip is a permanent memory module that stores critical system information. When it fails, replacing the entire PCB is the only solution — it cannot be serviced independently.

Click here to view the detailed guide.TS19