Midea MCCDH30A-TA3SL, Техническое и сервисное руководство

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Air-cooled modular chiller unit
1
Adjustment range of constant speed capability: ON and OFF. Adjustment range of constant speed capability: ON and OFF.
6
Total outlet water temperature sensor (Fault code E3).
Only the main unit is valid, and the subordinate units are invalid.
Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet water
temperature. Adjustment range: Load, stabilize, unload, Emergency Stop.
7
Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are
as shown in the following figure:
Normal display
Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenser A
Anti-freezing temp Unit outlet-water temp Unit inlet-water temp Temp. of the condenser B
EXV opening A EXV opening B Operating current of system A Operating current of system B
The last failure
● Display contents of “operating mode”: 1. cooling; 2. heating; 4. pump; 8. Stand-by.
● Display contents of “number of online units”: the main unit can display the number of online units, and the slave unit
displays 0.
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Factory setting.
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8
9
A
B
C
D
E
F
8 7
6
5
4
3
2
1
0
0 1
2
3
4
5
6
7
8
F
E
D
C
B
A
9 8
ADDRRSS
Each modular part of modular unit has the same electric control function, and the main unit and subordinate units can be set
through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being
the main unit is given to the unit with digital compressor, and other addresses are subordinate units. Only the unit is chosen
as the main unit, its electric control can activate such functions as direct communication with the wired controller, refrigerating
and heating capability adjustment, pump control, auxiliary electric heater control, total effluent temperature detection and
water flow switch detection.
10 COM (O) 485 communication port (Fault code E2).
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COM (I) 485 communication port (Fault code E2).
COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication.
1) If faults occur between the wired controller and the main unit module, all modules will be shut down.
When the address is 0, it serves as the main unit.
When the address is 1,2,3……F, it serves as the
subordinate unit 1,2,3……15.