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
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