Emerson Chilled Water Series User Manual page 58

C1 ACT, C2 ACT, C3 ACT and C4 ACT correspond to the customer alarms. 'OPEN' means normally open,
'CLOSE' means normally closed.
Alarm delays setting
The alarm delays are the time after faults occur and before the alarms are triggered. See Figure 5-9 for the
menu format.
The alarm name, delay time, delay enabling and alarm type are displayed from left to right in the list.
The alarm delay can be set to 0 ~ 9999. Unit: second.
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
Liebert.PEX Chilled Water Series Air Conditioner User Manual
SET ALARMS
S236 FOL
S237
LOA
S238 CF
S239 HRT
S240 LRT
S241 HRH
Figure 5-9 Alarm delay
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
Chapter 5 iCOM Controller
2/10
01
T
DEL EN
5 Yes ALM
3 Yes ALM
2 Yes WRN
30 Yes WRN
Yes
30 WRN
30
Yes WRN
Alarm/event
SN
name
S266 LOF
S267 SGP
S268 STB
S269 HUP
S270 NOC
S271 -
S272 LOP
S275 CI1
S276 CI2
S277 CI3
S278 CI4
S279 CS
S280 HTD
S281 LB1
S282 RL
S283 HL
S284 FCL
S285 CL
S288 SC1
S289 SC2
S290 NOP
S291 CN1
S292 CN2
S293 EFF
S294 HST
S295 LST
Description
Loss of flow
Standby glycol pump on
Standby unit on
Humidifier problem
No connection w/Unit1
No connection w/UnitX
LOSS OF POWER
Customized input 1
Customized input 2
Customized input 3
Customized input 4
Call for service
High temperature
Loss of air blower 2
Reheat lockout
Humidifier lockout
FC lockout
Compressor(s) lockout
Short cycle 1
Short cycle 2
NO power
Condensor 1 Fail
Condensor 2 Fail
EC Fan fail
High supply air temperature
Low supply air temperature
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