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1. Checking Key Components of Unit..................................................44
       1.1 Flow Switch ...............................................................................................44
       1.2 Water Pump ...............................................................................................45
       1.3 Electric Heater...........................................................................................46
2. Self-Diagnosis Feature......................................................................47
       2.1 Concept of ‘Classified Trouble’ ...............................................................47
       2.2 Error Code List..........................................................................................48
 
3. Trouble Shooting Guide
t ............................................................................50
Trouble Shooting