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MCAC-ATSM-2014-09 Aqua tempo power series tropical air-cooled scroll chiller 50Hz
93
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
T61 frost-proof temp
Unit outlet water temp
Unit outlet-water tempe
Temp. of the condenser B
TXV opening A
TXV 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
subordinate unit displays 0.
8
Selection code of the compressor
9
10
COM (O) 485 communication port (fault code E2)
11
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.
2) If faults occur between the main unit and subordinate units, the subordinate unit module suffering communication
fault will be shut down. Less units will be detected by the wired controller, which may display EA, and in the meanwhile,
the indicator lamp of the wired controller will flash.
Restart 3 minutes later after malfunction be removed.
12
High-pressure protection of the system A and discharge temp. switch protection (protection code P0);
High-pressure protection of the system B and discharge temp. switch protection (protection code P2);
Low-pressure protection of the system A (protection code P1);
Low-pressure protection of the system B (protection code P3);
Constant speed compressor: connection of discharge temp. switch and high-pressure switch of the system in series.
13
Inlet water temp. sensor T62 (TBH2) (fault code EF)
14
Shell and tube low-temp. ant-freeze sensor T61 (TBH1) (fault code Eb)
15
Water flow detection (fault code of the main unit E0) is only valid for the main unit but invalid for subordinate units.
1) Main unit: if abnormal water flow occurs for the first and second time, the main unit board will display fault code E9. If
abnormal water flow occurs the third time, the main unit board will display fault code E0 (off-power recovery is needed),
and the wired controller will display fault code E0 (fault is displayed only after 3 detection).
2) Subordinate unit: (water flow detection will not be done).
16
(reserved port)
17
Electronic expansion valve of the system B
Reserved DIP switch
state
The diagram denotes
selection of constant
speed compressor
Each unit has the same electric control function, and the main
unit and slave 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 slave
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.
When the address is
1,2,3……F, it serves
as the subordinate
unit 1,2,3……15.
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
When the
address is 0, it
serves as the
main unit.
Содержание Aqua Tempto Power Series
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