Mitsubishi Electric PURY-P72TYJMU-A Service Handbook page 172

[ VII Control ]
2. Operations in each mode
(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.
HWE0913A
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 control
2 3
- 163 -
Normal operation
During test run mode
Unit in the stopped state
GB