Faults; Protection - Midea Aqua Tempo Super Series Technical & Service Manual

MCAC-ATSM-201606
0
F 1
E 2
D 3
C
B 5
A 6
9 8 7
8
0 1
F
E 2
D 3
4
C
26
B 5
A 6
9 8 7
8
ADDRRSS
Each scroll part of scroll 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.
27 PWM pressure released valve control(For digital compressor).
28 Outdoor fan A, controlled by T4.
29 Outdoor fan B, controlled by T4.
30 Input of transformer, 220V AC current. (Only valid for the main unit).
Input of three-phase four-wire power supply (Fault code E1).
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120º
among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be displayed.
31
When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power
supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in
operation.
32
S7 ON: Remote control
S8 ON: Low temp. mode
S9 ON: 30KW
33 Output of transformer
CAUTION

1. Faults

When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the slave unit suffers faults, only the unit stops operating, and other units are not affected.

2. Protection

When the main unit is under protection, only the unit stops operating, and other units keep running;
When the slave unit is under protection, only the unit stops operating, and other units are not affected.
When the address is 0, it serves as the main
4
unit.
When the address is 1,2,3......F, it serves as
the subordinate unit 1,2,3......15.
OFF：Wired control
OFF：Normal
OFF：65/130/200/260KW
Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)
112