Older and more basic Samsung wall-split models don’t always use the detailed three-digit codes found on newer inverter systems. Instead, they display simple single-digit codes like E5, E6 or E7. These simplified codes still point to genuine faults, but because these units have less sophisticated diagnostics, the code alone doesn’t narrow things down as precisely as it does on newer models.
Broadly, E5 relates to a problem with the indoor heat exchanger sensor, E6 points to a fault with the outdoor heat exchanger sensor, and E7 indicates an issue with the heater temperature sensor. In each case, the underlying cause is generally the same: the relevant sensor has disconnected or failed at its component.
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.
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