MITSUBISHI ELECTRIC P500YMF-C User Manual

Page 57

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YES

(6)

Dry operation

Normal operations

Thermostat ON

Stop

1. Indoor unit fan stop
2. Inverter output 0Hz
3. Indoor unit LEV, oil return LEV

closed

4. Solenoid valve OFF
5. Outdoor unit fan stop
6. BC controller solenoid valve OFF
7. BC controller LEV fully closed

1. Outdoor unit (Compressor) intermit-

tent operations

2. Indoor unit fan intermittent opera-

tions
(Synchronized with compressor :
low speed, OFF operations)

Dry operations

4-way valve OFF

Inlet temp. 18˚C

Note : 2

Thermostat ON

Test run start

Note : 1

When indoor unit inlet temperature exceeds 18˚C, outdoor unit (compressor) and indoor unit fan start intermittent operations
synchronously. Operations of outdoor unit, BC controller, indoor unit LEV and solenoid valve accompanying compressor are
the same as those in cooling operations.

Note : 2

Thermostat is always kept on in test run, and indoor and outdoor unit intermittent operation (ON) time is a little longer than
normal operations.