Haier · Air Conditioning
This error signifies a problem with the EEPROM (Electrically Erasable Programmable Read-Only Memory) on either the indoor (E4) or outdoor (F12) unit. This memory stores vital operating data.
Haga clic en los pasos para seguir su progreso.
Turn off the power to the unit for at least 1 minute, then power it back on.
If the error persists, the relevant mainboard (Indoor or Outdoor PCB) needs to be replaced by a technician.