Quiet Function; Eco+ Function; Id-Od Communication - Daikin FTXN25L Service Manual

Algorithm & Control
2.7 Quiet function (Applicable for FTXK_A models)
• Press for quiet operation.
• Fan speed turns to minimum speed.
• Press again to deactivate the function.
• Available in HEAT and COOL modes only.
• Any change of fan speed will deactivate this function.
2.8 ECO+ function (Applicable for FTXK_A models)
• Press for eco-friendly mode cooling or heating operation.
• Set temperature automatically adjusts to eco-friendly level.
• Press again to deactivate the function.
• Available in HEAT and COOL modes only.
2.9 Indoor-Outdoor Communication
Master by outdoor unit.
Indoor controller board will transmit signal to outdoor controller board every 0.5s. Outdoor unit will response
to indoor once the valid data is received.
Indoor
Outdoor
If the data communication line between indoor and outdoor is disrupted for 15s continuously, the compressor
will stop & outdoor fan stops with fan OFF timer. Indoor LED blinks to indicate error. If the communication
resumes within 15s, error code is cleared and compressor restarts after 3 minutes. If the communication
does not resume after 15s, unit is unable to restart and the error keeps blinking.
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