Operations In Each Mode; Cooling Operation - Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook

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2. Operations in each mode

(1) Cooling operation

1. Inverter output 0Hz
2. HBC controller VB3 fully closed
3. Solenoid valves OFF
4. Outdoor unit fan stop (PURY)
5. HBC controller solenoid valves OFF
6. HBC controller LEV fully closed
*Note 1. The indoor fan operates at the set notch under cooling mode regardless of the
HWE1410A
4-way valve OFF
NO
YES
1. Inverter frequency control
2. HBC controller VB3 control
3. Solenoid valve control
4. Outdoor unit fan control (PURY)
5. HBC controller solenoid valve control
6. HBC controller control
ON/OFF state of the thermostat.
Cooling operation
Indoor unit fan
*Note 1
operation
YES
Test run mode
ON
NO
Thermostat
ON
YES
3-minute restart
prevention
NO
2 3
- 82 -
Normal operation
During test run mode
Unit in the stopped state
GB