Calibration - Emerson Liebert PEX Series User Manual

62 Chapter 5 iCOM Controller
The delay enabling determines whether the alarm will be displayed and the alarm menu is entered, Options include
'Yes' and 'No'.
The alarm type can be set to 'ALM' (alarm), 'WRN' (warning) and 'MSG' (message). They determine the alarm degree
of the corresponding event.
The alarm names are listed in Table 5-25.
Alarm/event
SN
name
S236 FOL
S237 LOA
S238 CF
S239 HRT
S240 LRT
S241 HRH
S242 LRH
S243 HTA
S244 LTA
S245 HHA
S246 LHA
S249 OL1
S250 OL2
S251 HP1
S252 HP2
S253 LP1
S254 LP2
S255 PD1
S256 PD2
S257 HT1
S258 HT2
S259 EHO
S262 WHE
S263 SMO
S264 WUF
S265 CPH

5.7.7 CALIBRATION

The CALIBRATION menu can calibrate sensors by setting offsets. The parameters are listed in Table 5-26. The
parameters are in pairs: the former is the calibrated value and the latter is the calculated value, or the sum of the
measured value and the calibrated value. This value is engaged in the calculation of control need.
Parameters
S602 RTN TEMP
S603 CAL TEMP
S604 RTN HUM
S605 CAL HUM
S606 DS1 NTC
S607 CAL DS1
S608 DS2 NTC
Table 5-25 Alarm name description
Description
Fan overload
Loss of airflow
Filter clogged
High room temp.
Low room temp.
High room hum.
Low room hum.
High temperature of sensor A
Low temperature of sensor A
High humidity of sensor A
Low humidity of sensor A
Compressor 1 overload
Compressor 2 overload
Compressor 1 high pressure
Compressor 2 high pressure
Compressor 1 low pressure
Compressor 2 low pressure
Compressor 1 pumpdown fails
Compressor 2 pumpdown fails
Digital scroll 1 high temperature
Digital scroll 2 high temperature
EL HEAT HIGH TEMP
Working hours exceeded
Smoke detected
Water under floor
Conderser pump high water
Table 5-26 Descriptions of CALIBRATION parameters
Default
Calibrated return air temperature. It can be set as a positive or negative value. Use the up
K
and down buttons to change the setting value, 0.1K at each step
Sum of the calibrated value and measured return air temperature. This value is compared
25°C
with the setting value as the system actual temperature and is engaged in the calculation
Calibrated return air humidity. It can be set as a positive or negative value. Use the up and
+0.0%
down buttons to change the setting value, 1% at each step
Sum of the calibrated value and measured return air humidity. This value is compared with
44.0%
the setting value as the system actual humidity and is engaged in the calculation
Calibrated digital scroll 1NTC. It can be set as a positive or negative or positive value. Use
+0.0K
the up and down buttons to change the setting value, 0.1K at each step
Sum of the calibrated value and return air humidity measured by digital scroll 1NTC
29°C
sensor. This value is engaged in the calculation
Calibrated digital scroll 2NTC. It can be set as a positive or negative value. Use the up and
+0.0K
down buttons to change the setting value, 0.1K at each step
Liebert.PEX2 Series Air Conditioner User Manual
Alarm/event
SN
name
S266 LOF Loss of flow
S267 SGP Standby glycol pump on
S268 STB Standby unit on
S269 HUP Humidifier problem
S270 NOC No connection w/Unit1
S271 - No connection w/UnitX
S272 LOP LOSS OF POWER
S275 CI1 Customized input 1
S276 CI2 Customized input 2
S277 CI3 Customized input 3
S278 CI4 Customized input 4
S279 CS Call for service
S280 HTD High temperature
S281 LB1 Loss of air blower 2
S282 RL Reheat lockout
S283 HL Humidifier lockout
S284 FCL FC lockout
S285 CL Compressor(s) lockout
S288 SC1 Short cycle 1
S289 SC2 Short cycle 2
S290 NOP NO power
S291 CN1 Condensor 1 Fail
S292 CN2 Condensor 2 Fail
S293 EFF EC Fan fail
S294 HST High supply air temperature
S295 LST Low supply air temperature
Description
Description