Fault Codes / Mitsubishi Heavy / E6
KX / FD — E6 is a sensor fault at the indoor heat exchanger (ThIR/Thi-R sensor open/short, out-of-range resistance, or loose PCB connector) — NOT 'indoor unit loses communication with outdoor unit' (that belongs to Mitsubishi ELECTRIC, a different brand).
Mitsubishi Heavy E6: E6 is a sensor fault at the indoor heat exchanger (ThIR/Thi-R sensor open/short, out-of-range resistance, or loose PCB connector) — NOT 'indoor unit loses communication with outdoor unit' (that belongs to Mitsubishi ELECTRIC, a different brand). This fault noticeably affects operation.
Source: Mitsubishi Heavy resmi servis kılavuzu — DÜZELTİLDİ: MHI 'Error Codes – R410A', E6: 'Indoor unit heat exchanger sensor [ThIR] defective (resistance is open circuit or closed circuit). Poor connection of sensor connector on the indoor PCB.' Corroborated independently by becoolrefrigeration.co.uk (MHI error codes: E6 = 'Indoor heat e…
Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.
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