Mitsubishi Electric PUHY-P200 Service Handbook page 80

2. Operation under each mode
(1) Cooling operation
1. Inverter output 0Hz
2. Indoor LEV, LEV1 rated
opening
3. All solenoid valves OFF
4. Outdoor unit fan stop
5. 52C1 OFF
Note :
❉1 The indoor fan operates at the set notch under cooling regardless of thermostat ON/OFF.
Cooling operation
4-way valve OFF
Indoor unit fan
Note: ❉1
operations
YES
Test run start
NO
NO
Thermostat
ON
YES
YES
3-minute
restart preven-
tion
NO
1. Inverter frequency control
2. Indoor unit LEV, LEV1
control
3. Solenoid valve control
4. Outdoor unit fan control
5. 52C1 control
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Normal operation
Trouble observed
Stop