R410a tropical air-cooled scroll chiller unit 60Hz MCAC-ATSM-2014-09
108 Troubleshooting
1. Malfunction & Protection Codes
1.1 MGBT-F25W/DN1, MGBT-D25W/DN1, MGBT-D30W/DN1, MGBT-F30W/DN1
Water flow detection error (The third time)
Power phase sequence error
Total water outlet temperature sensor error
Outlet water temperature sensor in Shell and tube exchanger error
Pipe temperature sensor in condenser A error
Pipe temperature sensor in condenser B error
Outdoor ambient temperature sensor error or power supply protection
Air exhaust temp. sensor error of digital compressor
Water flow detection error (The first and second times)
Main unit detect that auxiliary unit’s quantity have decreased.
Freeze-proof temperature sensor 1 in double-pipe heat exchanger error
Wired controller did not find out any on-line module unit
Wired controller and module unit communication error
1-hour consecutive 4-times PE protection
Wired controller and computer communication error
Inlet water temp. sensor error
High pressure or air discharge temp. protection error in system A
Low pressure protection happens to system A
High pressure or air discharge temp. protection in system B
Low pressure protection happens to system B
Current protection happens to system A
Current protection happens to system B
Condenser high pressure protection happens to system A
Condenser high pressure protection happens to system B
Air discharge temp. sensor protection of digital compressor in system A
Protection of outlet and inlet water temp. difference
Low ambient temp. drive-up protection
System freeze-proof protection
Low temp. protection of double-pipe heat exchanger
Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved)
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