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Only for training and service purposes
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3. Control logic
1. Compressor ......................................................................................................................25
2. Step(frequency) control ...................................................................................................26
3. Reversing valve operaton................................................................................................27
4. Discharge pipe control.....................................................................................................28
5. Input Current Control .......................................................................................................29
6. Outdoor Fan Control ........................................................................................................30
7. Defrost Control .................................................................................................................31
8. LEV Control.......................................................................................................................32
9. Oil restoration operation..................................................................................................34
10. Compressor warm-up control logic..............................................................................34
11. Heat sink control.............................................................................................................35
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