HAIER CHILLER
AI4: 1#
fin temp.;
AI5: 1# discharging temp.;
AI6: 2# water outlet temp.;
AI7: 2# fin temp.;
AI8: 2# discharging temp.;
DI1: water flow protection;
DI2: 1#
system compressor high pressure protection;
DI3: 1#
system compressor low pressure protection;
DI4: 1#
system compressor overload protection;
DI5: 1#
system fan motor overload protection;
DI6: 2#
system compressor high pressure protection;
DI7: 2#
system compressor low pressure protection;
DI8: 2#
system compressor overload protection;
DI9: 2#
system fan motor overload protection;
T1:
failure alarm output;
T2:
water pump control;
T3: 1#
compressor control;
T4: 1#
4-way valve control;
T5: 1#
fan motor control;
T6: 1#
electric heater control;
T7: 1#
side-way vlave control
T8: 2#
compressor control;
T9: 2#
4-way valve control;
T10: 2# fan motor control;
T11: 2# electric heater control;
T12: 2# side-way valve control;
AC-N: AC neutral wire N.
13.4 Remote communication port
There are four wires between the wired controller and the control board of the master unit, which are GND,
+12V, A, B.
There are 3 wires among the control boards, which are GND, A, B.
The communication type between the wired controller and the control board is RS-485. There is a remote
control port and the independent system alarm output port (current >5A/220V AC) in order to control the
unit ON/OFF for the exterior connected system (or the fan coil simultaneous control switch) and for the
exterior alarm equipment.
13.5 LED indication on the wired controller
Failure (red), cooling (green), heating (yellow) , auto(orange)
