Invest MSC-24/QD FP, Service Manual

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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.
MSC-24/QD FP
MSH-24/QD FP
Auto indicator
This indicator illuminates when the air conditioner is in AUTO operation.
Timer indicator
This indicator illuminates when TIMER is set ON/OFF.
PRE.-DEF. Indicator
This indicator illuminates when the air conditioner starts defrosting automatically or when the warm
air control feature is activated in heating mode.
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.
Displays the malfunction code or protection code.
Frequency indicator
This indicator appears only when the compressor is in operation and indicates the current
operating frequency.