Electronic Function; Abreviation; Display Function - Fisher FSIArt?100HFD Service Manual

8. Electronic function
8.1 Abbreviation
T1: Indoor ambient temperature
T2: Pipe temperature of indoor heat exchanger
T3: Pipe temperature of outdoor heat exchanger
T4: Outdoor ambient temperature
8.2 Display function
8.2.1 Icon explanation on indoor display board.
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Lights up when the super ionizer function is energized.
This indicator illuminates when TIMER is set ON/OFF.
This indicator illuminates when the air conditioner starts defrosting
automatically or when the warm air control feature is activated in
heating mode.
This indicator illuminates when the air conditioner is in AUTO operation.
Usually it displays the setting temperature. It will display the room
temperature when the air conditioner is in FAN only operation. It will
display "SC" when self-clean function is activated. It will also display
the malfunction code or protection code.
This indicator appears only when the compressor is in operation and
indicates the current operating frequency.