Error code
Toshiba Estia All models code E04
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Meaning
Regular communication error between hydro unit and outdoor unit When serial signal from the outdoor unit cannot be received though normal serial signal is sent to the outdoor unit 1) When serial signal cannot be received continuously for 60 seconds (S code communication) 2) Communication is still not successful for 80 seconds through three retries if serial signal cannot be received for 20 seconds after new communication (f code) starts When the remote controller starts operation, serial transmission starts with the new communication format. Auto-reset: When successful regular communication is made
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