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13.1.4.2
Heating Temperature Sampling Control
Temperature sampling is controlled by outdoor unit where room temperature for all power supply ON indoor unit
could be obtained.
When capability supply to the indoor unit is OFF and the compressor is ON, the indoor fan motor is stopped.
During this condition, 15 seconds after sampling signal from outdoor unit is received, the indoor fan start
operation at pre-determined fan speed.
However, within first 4 minutes of capability stopped supply to the indoor unit, even sampling signal is received,
the sampling control is cancelled.
13.1.5
Automatic Operation
This mode can be set using remote control and the operation is decided by remote control setting temperature,
remote control operation mode, indoor intake and outdoor air temperature.
During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for
30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on
below chart.
Every 180 minutes, the indoor and outdoor temperature is judge. Based on remote control setting temperature,
the value of T1 will increase up to 10°C, T2 will decrease by 3°C and T3 will decrease up to 8°C.
13.2 Indoor Fan Motor Operation
A. Basic Rotation Speed (rpm)
i. Manual Fan Speed
[Cooling, Dry]
Fan motor's number of rotation is determined according to remote control setting.
[Heating]
Fan motor's number of rotation is determined according to remote control setting.
ii. Auto Fan Speed
[Cooling, Dry]
According to room temperature and setting temperature, indoor fan speed is determined automatically.
The indoor fan will operate according to pattern below.
Remote control
O
Tab
Hi
Remote control
O
Tab
SHi
O
O
O
Me+
Me
Me-
O
O
O
Me+
Me
Me-
38
O
Lo
O
Lo
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Troubleshooting
