2.G HEAT MODE
• If Tr <= Ts-1, heat operation is activated, MTV1 is turned on. AUX1 is closed. Indoor fan runs at the set
speed.
• If Tr>= Ts, heat operation is terminated, MTV1 is turned off. AUX1 is opened. Indoor fan runs at low fan
speed for 30 seconds and stops for 3 minutes repeatedly.
• The range of Ts is 16 to 30 °C.
• Indoor fan speed can be adjusted for low, medium, high and auto
• When turned on, MTV1 requires 30 seconds before it is fully open.
•
When turned off, MTV1 requires 120 seconds before it is fully closed.
2.G.1 Pre-Heat
• If Ti 1<= 32 °C, when MTV1 is on, indoor fan remains off and AUX1 is closed.
• If 32 °C < Ti1< 38 °C, when MTV1 is on, AUX1 is closed and indoor fan keeps original state.
• If Ti1 >= 38 °C, when MTV1 is on, AUX1 is closed and Indoor fan runs at set speed.
• If indoor coil temperature sensor is damages, pre-heat time is set for 2 minutes and Indoor fan runs at set
speed.
2.G.2 Post-Heat
• If Ti1 > 38 °C, when MTV1 is off, indoor fan remains on at set speed and AUX1 is opened.
• If 35 °C <= Ti1< =38 °C, when MTV1 is off, AUX1 is opened. Indoor fan keeps original state.
• If Ti1 < 35 °C, when MTV1 is off, AUX1 is opened. Indoor fan stops.
• If indoor coil temperature sensor is damages, post-heat time is set for 3 minutes with indoor fan running
at set speed.
2.G.3 Protection of indoor coil
• If Ti1 >= 75 °C, MTV1 is turned off, AUX1 is opened. Indoor fan runs at set speed.
• If Ti1 < 70°C, MTV1 is turned on, AUX1 is closed. Indoor fan runs at set speed.
• If indoor coil temperature sensor is damaged, the protection mode will become obsolete and the unit will
work as the pre-heat and post-heat set times.
2.H DEHUMIDIFICATION MODE
If Tr>= 25°C, MTV2 will be ON for 3 minutes and OFF for 4 minutes. MTV1 is off.
If 16 °C <= Ti< 25 °C, MTV2 will be ON for 3 minutes and OFF for 6 minutes. MTV1 is off.
If Tr <16°C, MTV2 will be turned off. MTV1 is off.
2.I AUTO MODE
• The cool and heat operation will be selected automatically depending on the Tr and Ts.
• If auto mode is in cool operation, the operation will only change to heat if Tr < Ts – 3.5 °C.
• If auto mode is in heat operation, the operation will only change to cool if Tr > Ts + 1.5 °C
• Cool and Heat options working under Auto mode are the same as those working under Non-Auto mode
shown as the following figure.
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