HB21FG*
3
Issue 2010-12
Rev.
Ref1012S008V0
4-8. Fridge temperature setting 24
4-9. Open-door alarm function 24
4-10. Energy-saving display control function 24
4-11. Power outage memory function 25
4-12. Power outage memory function 25
5. Electrical Control Principle ······················································································ 26
5-1. Overview 26
5-2. Fridge electric air damper control 26
5-3. Fan control 26
5-4. Vertical girder hater control 27
5-5. Defrost control 27
6. Cooling System Principle························································································· 28
6-1. Cooling system flow scenograph 28
6-2. Cooling system flow chart 28
7. Circuit Diagram ········································································································· 29
7-1. Main control PCB diagram diagram 29
7-2. Brief principle diagram 30
8. Sensor, Error Code and Self-test Function ···························································· 31
8-1. Sensor position 31
8-2. Error codes list 31
8-3. How to display error code 32
8-4. Self-test function 32
9. Trouble shooting ······································································································· 43
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