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.
Table 5-25 Alarm name description
SN
Alarm/event
name
Description SN
Alarm/event
name
Description
S236 FOL Fan overload S266 LOF Loss of flow
S237 LOA Loss of airflow S267 SGP Standby glycol pump on
S238 CF Filter clogged S268 STB Standby unit on
S239 HRT High room temp. S269 HUP Humidifier problem
S240 LRT Low room temp. S270 NOC No connection w/Unit1
S241 HRH High room hum. S271 - No connection w/UnitX
S242 LRH Low room hum. S272 LOP LOSS OF POWER
S243 HTA High temperature of sensor A S275 CI1 Customized input 1
S244 LTA Low temperature of sensor A S276 CI2 Customized input 2
S245 HHA High humidity of sensor A S277 CI3 Customized input 3
S246 LHA Low humidity of sensor A S278 CI4 Customized input 4
S249 OL1 Compressor 1 overload S279 CS Call for service
S250 OL2 Compressor 2 overload S280 HTD High temperature
S251 HP1 Compressor 1 high pressure S281 LB1 Loss of air blower 2
S252 HP2 Compressor 2 high pressure S282 RL Reheat lockout
S253 LP1 Compressor 1 low pressure S283 HL Humidifier lockout
S254 LP2 Compressor 2 low pressure S284 FCL FC lockout
S255 PD1 Compressor 1 pumpdown fails S285 CL Compressor(s) lockout
S256 PD2 Compressor 2 pumpdown fails S288 SC1 Short cycle 1
S257 HT1 Digital scroll 1 high temperature S289 SC2 Short cycle 2
S258 HT2 Digital scroll 2 high temperature S290 NOP NO power
S259 EHO EL HEAT HIGH TEMP S291 CN1 Condensor 1 Fail
S262 WHE Working hours exceeded S292 CN2 Condensor 2 Fail
S263 SMO Smoke detected
S293 EFF EC Fan fail
S264 WUF Water under floor S294 HST High supply air temperature
S265 CPH Conderser pump high water S295 LST Low supply air temperature
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.
Table 5-26 Descriptions of CALIBRATION parameters
Parameters Default Description
S602 RTN TEMP K
Calibrated return air temperature. It can be set as a positive or negative value. Use the up
and down buttons to change the setting value, 0.1K at each step
S603 CAL TEMP 25°C
Sum of the calibrated value and measured return air temperature. This value is compared
with the setting value as the system actual temperature and is engaged in the calculation
S604 RTN HUM +0.0%
Calibrated return air humidity. It can be set as a positive or negative value. Use the up and
down buttons to change the setting value, 1% at each step
S605 CAL HUM 44.0%
Sum of the calibrated value and measured return air humidity. This value is compared with
the setting value as the system actual humidity and is engaged in the calculation
S606 DS1 NTC +0.0K
Calibrated digital scroll 1NTC. It can be set as a positive or negative or positive value. Use
the up and down buttons to change the setting value, 0.1K at each step
S607 CAL DS1 29°C
Sum of the calibrated value and return air humidity measured by digital scroll 1NTC
sensor. This value is engaged in the calculation
S608 DS2 NTC +0.0K
Calibrated digital scroll 2NTC. It can be set as a positive or negative value. Use the up and
down buttons to change the setting value, 0.1K at each step
Liebert.PEX2 Series Air Conditioner User Manual
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