52 Chapter 5 iCOM Controller
Table 5-6 Descriptions of SET ALARMS parameters
Parameters Default Setting range Description
U202 RTN SNSR Yes Yes, No Return air alarm enable
U203 HI TEMP 27°C 1°C ~ 99°C High return air temperature alarm setpoint
U204 LO TEMP 18°C 1°C ~ 99°C Low return air temperature alarm setpoint
U205 HI HUM 60% 1% ~ 99% High return air humidity alarm setpoint
U206 LOW HUM 40% 1% ~ 99% Low return air humidity alarm setpoint
U207 SENSOR A No Yes, No Sensor A alarm enable
U208 HI TEMPA 50°C 1°C ~ 99°C High temperature alarm setpoint of sensor A
U209 LO TEMPA 25°C 1°C ~ 99°C Low temperature alarm setpoint of sensor A
U210 HI HUM A 70% 1% ~ 99% High humidity alarm setpoint of sensor A
U211 LO HUM A 30% 1% ~ 99% Low humidity alarm setpoint of sensor A
U213 SUP SNSR No Yes, No Supply air alarm enable
U214 HI SUP T 24°C 1°C ~ 99°C High supply air temperature alarm setting value
U215 LO SUP T 10°C 1°C ~ 99°C Low supply air temperature alarm setting value
To browse through the menu, press the enter button to highlight the option, and use the up or down button to scroll.
Password is required for changing the setpoints. Then, enter the SET ALARMS menu, press the enter button to
highlight the option, use the up or down button to browse the submenu. Press the enter button to enter the selected
parameter. Use the up or down button to change the setpoints, and press the enter button to save the change, or press
the ESC button to quit the change.
5.6.6 SENSOR DATA
You can monitor the data acquired by the sensors through the SENSOR DATA menu. The values are read only, no
setting or change is allowed. The parameters are described in Table 5-7.
Table 5-7 Descriptions of SENSOR DATA parameters
Parameters Unit Description Parameters Unit Description
U301 TEMP A °C Temperature of sensor A U313 Hi Temp °C Daily high temperature
U302 HUM A %
Relative humidity of
sensor A
U314 Lo Te H h Daily low temperature (hour)
U303 TEMP B °F Temperature of sensor B U314 Lo Te M m
Daily low temperature
(minute)
U304 HUM B %
Relative humidity of
sensor B
U314 Lo Te S s
Daily low temperature
(second)
U305 TEMP C °C Temperature of sensor C U314 Lo Temp °C Daily low temperature
U306 HUM C %
Relative humidity of
sensor C
U315 Hi Hu H h Daily high humidity (hour)
U307 FC TEMP °C Free cooling temperature U315 Hi Hu M m Daily high humidity (minute)
U308 AMB TEMP °C Outdoor temperature U315 Hi Hu S s Daily high humidity (second)
U309 FC STATE - Free cooling status U315 Hi Humi % Daily high humidity
U310 DS1 TEMP °C
Temperature of digital
scroll 1
U316 Lo Hu H h Daily low humidity (hour)
U311 DS2 TEMP °C
Temperature of digital
scroll 2
U316 Lo Hu M m Daily low humidity (minute)
U313 Hi Te H hr
Daily high temperature
(hour)
U316 Lo Hu S s Daily low humidity (second)
U313 Hi Te M m
Daily high temperature
(minute)
U316 Lo Humi % Daily low humidity
U313 Hi Te S s
Daily high temperature
(second)
5.6.7 DISPLAY SETUP
The DISPLAY SETUP menu is used to set the LCD display attributes. Password is not required for changing the
setpoints. The parameters are described in Table 5-8.
Liebert.PEX2 Series Air Conditioner User Manual
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