11
ICE A/C & HEX Combo Unit I&O Manual 07/2020 Rev.1
Parameter
Alarm
Value
Recovery
Value/
Remedy
Units Description
Output
Out.Ts.Fault
--
Change
external
Temp.
sensor
--
External Temp. value
is beyond sensor
checking range
Energy-saving is
started when the
cabinet internal
Temp. exceeds the
setting point, and
compressor runs as
normal logic, and
upload protocol
HP.Alarm
78
68
ºC
Condenser Temp is
over than 78ºC contin-
uously
Stop compressor
and upload protocol
HP.Alm.Lock
78
68
ºC
Interval time of contin-
uous 5 times HP alarm
is less than 1 hour.
Stop compressor
and trigger alarm,
and upload protocol
Evap Frost
0
5
ºC
Coil Temp. is lower 0ºC
continuously
Stop compressor
and upload protocol
Pi.Ts.Fault
--
Change
coil
Temp.
sensor
--
Coil Temp. value is be-
yond sensor checking
range
Upload protocol
Comp.Fault
<5
≥5
ºC
On cooling mode, the
difference between
evaporator coil Temp.
and cabinet return
Temp. is less than 5K
continuously
Trigger alarm and
upload protocol
Table 3. Alarm Parameter Settings
3.4 Monitoring
The Combo Unit is supplied with a RS485 control interface offers a variety of
information output. For detailed information, please refer to the protocol list.
If you need to adjust the set point, you can connect heat exchanger and computer with
RS485 ports, through the background monitoring software or handheld monitor to make
changes.
Note:
To prevent unauthorized setting changes, make sure only qualified people are
permitted access.
3.5 Operational Menu Structure
The unit controller utilizes a 96x32 LCD, which contains 7 buttons for adjusting the
settings. The operation interface is as shown in the following figure.
