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Actions Performed In Different Modes - Mitsubishi Electric PURY-HP72 Service Handbook

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[5-4 Operation Flowcharts ]
5-4-2

Actions Performed in Different Modes

(1) Cooling operation
1. Inverter output 0Hz
2. Indoor unit LEV, Oil return LEV fully closed
3. Solenoid valves OFF
4. Outdoor unit fan stop
5. BC controller solenoid valves OFF
6. BC controller LEV fully closed
*Note 1. The indoor fan operates at the set notch under cooling mode regardless of the
ON/OFF state of the thermostat.
HWE13080
Cooling operation
4-way valve OFF
Indoor unit fan
*Note 1
operation
YES
Test run mode
ON
NO
NO
Thermostat
ON
YES
YES
3-minute restart
prevention
NO
1. Inverter frequency control
2. Indoor unit LEV, Oil returnLEV control
3. Solenoid valve control
4. Outdoor unit fan control
5. BC controller solenoid valve control
6. BC controller LEV control
2
3
- 143 -
Normal operation
During test run mode
Unit in the stopped state
GB

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