Electronic Function; Abbreviation; Display Function - Midea MS9A-09HRDN1-QC2 Service Manual

9. Electronic function

9.1 Abbreviation

T1: Indoor ambient temperature
T2: Pipe temperature of indoor heat exchanger
T3: Pipe temperature of outdoor heat exchanger
T4: Outdoor ambient temperature

9.2 Display function

9.2.1 Icon explanation on indoor display board.
①
Run indicator
Flash at 0.5Hz when the unit is standby. Illuminate when the unit is turned on.
② Auto indicator
This indicator illuminates when the air conditioner is in AUTO operation.
③ Ion indicator
Illuminate when Ionizer/Plasma function is activated.
④ Timer indicator
This indicator illuminates when TIMER is set ON/OFF.
⑤ DEF. Indicator
This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air
control feature is activated in heating mode.
⑥ TEMPERATURE indicator
Usually it displays the temperature settings. When change the setting temperature, this indicator begins
to flash, and stops 20 seconds later. It displays the room temperature when the air conditioner is in FAN
only operation, and the range of that is 0~50 . When the unit stops operation, it returns to original factory
settings. It will also display the error codes when malfunction or protection happen.
⑦ Frequency indicator
This indicator appears only when the compressor is in operation and indicates the current operating
frequency.
9.2.2 LED display control function.
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