E162 is an EEPROM error, which relates to the memory chip on the indoor unit’s control board rather than a mechanical part of the system. This memory stores the settings and programming the board needs to operate correctly, and when that data becomes corrupted the unit can’t run properly until it’s cleared or the board is reprogrammed.
Unlike sensor or fan faults, this one is purely electronic in nature, and it’s often linked to something disrupting power to the board at the wrong moment. A repeat fault usually points to a hardware problem that needs a technician to properly diagnose.
Send us the code and a photo of the display, and a Ford & Doonan technician will get back to you. Please don't reset the unit before you take the photo.