York YEFE BZSM-MOW1 Series, Service Manual

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Contents
1. Safety Caution .....................................................................................................84
2. General Troubleshooting ....................................................................................85
2.1 Error Display (Indoor Unit) ............................................................................85
2.2 Error Display (Outdoor Unit) .........................................................................87
3. Error Diagnosis and Troubleshooting Without Error Code ...............................88
3.1 Remote maintenance ...................................................................................88
3.2 Field maintenance .......................................................................................89
4. Quick Maintenance by Error Code ......................................................................94
5. Troubleshooting by Error Code ...........................................................................95
5.1 Common Check Procedures.........................................................................95
5.2 Open circuit or short circuit of T1 or T2 temperature sensor diagnosis and
solution .................................................................................................................96
5.3 EEPROM parameter error diagnosis and solution ..........................................97
5.4 Water level alarm malfunction diagnosis and solution ..................................98
5.5 EC (Refrigerant Leakage Detection diagnosis and solution) ..........................99
5.6 F0 (Communication malfunction between indoor unit and auto-lifting panel
diagnosis and solution
) ..............................................................................100
5.7 F1 (Auto-lifting panel malfunction diagnosis and solution) .........................101
Troubleshooting