SERVICE MANUAL
Model: WS49GDB
2
Issue 2014-12-10
Rev. FZ1412S025V3
Contents
Table of Contents ················································································································2
1. General Information······································································································ 3
1-1. General guideline····································································································3
1-2. Insurance Test·········································································································3
1-3. How to read this Service Manual·············································································4
2. Product Feature ············································································································5
2-1. Specifications········································································································· 5
2-2. External views ········································································································7
3. Installation, adjustments and maintenance································································8
3-1. Installation··············································································································8
3-2. Adjustments············································································································8
3-3. Maintenance···········································································································8
4. Disassembly··················································································································10
4-1. Door assembly (Door, hinge, hinge cover) ····························································10
4-2. Control panel and display panel·············································································10
4-3. Ballast····················································································································13
4-4. Compressor···········································································································13
5. Control and display system·························································································14
5-1. Control and display panel······················································································14
6. System flow principle··································································································· 15
6-1. Refrigeration flow chart··························································································15
6-2. Refrigeration flow scenograph···············································································16
7. Circuit diagram·············································································································· 17
7-1. Brief principle diagram···························································································17
7-2. Brief connection diagram ·······················································································18
8. Trouble shooting···········································································································19
8-1. Normal phenomena································································································19
8-2. Abnormal phenomena····························································································21
8-2-1. Compressor doesn’t start ···········································································21
8-2-2. Poor cooling ·······························································································22