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MITSUBISHI ELECTRIC P500YMF-C User Manual

Page 55

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(4)

Cooling operation

YES

NO

YES

YES

NO

NO

1. Inverter output 0Hz
2. Indoor unit LEV, oil return LEV
3. Solenoid valve OFF
4. Outdoor unit fan stop
5. BC controller solenoid valve OFF
6. BC controller LEV fully closed

1. Inverter frequency control
2. Indoor unit LEV, oil return LEV

control

3. Solenoid valve control
4. Outdoor unit fan control
5. BC controller solenoid valve control
6. BC controller LEV control

Cooling operation

4-way valve OFF

Indoor unit fan

operations

Test run start

Thermostat ON

Normal operations

Test run

Stop

3-minute

restart

prevention