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GND
+9.8V
CN1
COM1 COM2 COM3 COM4
CN2CN3CN4CN5
AC-N AC-L
9.8V GND
CN4
CN1
Table 6.1 Errors for Multi VRF Indoor Units
Code Description
E0 Water pump error
E1 High pressure protection of the compressor
E2 Anti-freezing protection of the indoor unit
E3 Low pressure protection of the compressor
E4 High discharge temperature protection of the compressor
E5 Overload protection of the compressor
E6 Communication error
E8 Indoor unit fan protection
E9 Water overflow protection
F0 Indoor ambient temperature sensor error at the return air inlet.
F1 Evaporator temperature sensor error
F2 Condenser temperature sensor error
F3 Indoor ambient temperature sensor error
F4 Discharge temperature sensor error
F5 Ambient temperature sensor error at the display
EH Auxiliary electrical heater error
FF Sub-room switch opened
C5 Jumper cap error
C1 Arc control
C2 Electrical leakage protection
7. Installation and Debugging
7.1 Installation
7. 1.1 Installation Dimension Diagram
Fig.7.1 Installation Dimension Diagram
7.1.2 Interfaces
See Fig.7.2 for the display board interfaces and see Fig.7.3 for the power supply module interfaces.
Fig.7.2 Display Board Interfaces Fig.7.3 Power Supply Module Board Interfaces
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