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YES
NO
YES
YES
NO
NO
(3) Cooling operation
Note : 1 Indoor unit fan operates at set notch in cooling operation regardless of thermostat ON/OFF.
Cooling operation
4-way valve OFF
Indoor unit fan
operations
Test run start
Thermostat ON
Note: 1
3-minute
restart pre-
vention
1. Inverter output 0Hz
2. Indoor unit LEV, oil return LEV,
Subcool coil bypass LEV fully
closed
3. Solenoid valve OFF
4. Outdoor unit fan stop
1. Inverter frequency control
2. Indoor unit LEV, oil return LEV,
Subcool coil bypass LEV fully
closed
3. Solenoid valve control
4. Outdoor unit fan control
2 : (6) 1 or 3 : (6) 2
Normal operations
Test run
Stop
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