These codes could point to a breakdown in communication between the indoor unit and the outdoor unit: think of it as the two halves of your system losing the ability to “talk” to each other. Basic non-inverter models usually display this as a simple E1, while split-system inverter models break it down further into E101 or E102 depending on which unit is missing the signal.
The interconnecting cable that carries power and data between the indoor and outdoor units is often at the centre of this fault. When that link is interrupted, damaged, or wired incorrectly, the two control boards can no longer stay in sync and the system shuts itself down as a safety measure.
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.
(08) 9331 8800