48 Chapter 5 iCOM Controller
Liebert.PEX Chilled Water Series Air Conditioner User Manual
Parameters Default
Description
S081
AVG RUN
min
Average humidifier run time calculated through the number of starts and run hours
S082
BEST
24
Starts per day best
S083
WORST
240
Starts per day worst
S084
ALARMS
0
Number of high pressure alarms since the last maintenance
S085 BONUS
0MM
Bonus amount. Actual bonus calculated through the number of starts and average run
time. This value determines the time for the next maintenance
5.7.5 DIAGNOSTICS
The DIAGNOSTICS menu is classified into two groups. After entering the menu, pressing the up button and
down button can switch between two groups and pressing the enter button can enter the parameters of the
corresponding group. The parameters of group 1 are settable and used to help the maintenance personnel
start and cut off devices by hand in site, so as to realize the diagnosis for devices. The parameters of group 2
are read only and reflect the fault condition of the devices. See Table 5-22 for detailed descriptions.
Table 5-22 Descriptions of DIAGNOSTICS parameters
Parameters Default
Setting
range
Description
Group 1
S302
HP1 CODE
0
-
HP 1 alarm counting. The counter can be reset to 0
through the parameter
S303
HP2 CODE
0
-
HP 2 alarm counting. The counter can be reset to 0
through the parameter
S304
HT1 CNT
0
-
HT 1 alarm counting. The counter can be reset to 0
through the parameter
S305
HT2 CNT
0
-
HT 2 alarm counting. The counter can be reset to 0
through the parameter
S306
LP1 CODE
0
-
LP 1 alarm counting. The counter can be reset to 0
through the parameter
S307
LP2 CODE
0
-
LP 2 alarm counting. The counter can be reset to 0
through the parameter
S308
LP1 ACT
br
-
Actual LP 1
S309
LP2 ACT
br
-
Actual LP 2
S310
LP1 ACT
br
-
Actual LP 1
S311
LP2 ACT
br
-
Actual LP 2
S313
MANUAL
No
Yes, No
Selecting ‘Yes’ can turn on or off the components;
selecting ‘No’ can prohibit manual setting
S314
MOTOR(S)
On
On, Off
Diagnosis switch of fan motor. The settings ‘On’ and ‘Off’
are used to manually start and shut down the fan
respectively
S315
COMP1
Off
On, Off
Diagnosis switch of compressor 1. The ‘On’ setting of this
parameter can start compressor 1 only when the fan has
been started
S315 C1
MODE Run
Run, Evac,
Charg
Compressor 1 operation mode selection
S316
C1 CAP
Off
On, Off
Refrigeration capacity output of digital scroll compressor
1
S317
C1 CYCLE
0%
-
-
S318
LLSV 1
Off
On, Off
Diagnostic of liquid line solenoid valve of compressor 1
S319 COMP2
Off
On,
Off
Diagnostic swtich of compressor 2. Note that the On
setting of this parameter can start compressor 2 only
when the fan has been started
S319 C2
MODE Run
Run, Evac,
Charg
Compressor 2 operation mode selection
S320 C2
CAP
Off
-
Refrigeration capacity output of digital scroll compressor
2
S321 C2
CYCLE 0%
-
-
S322 LLSV2
Off
On,
Off
Diagnosis switch of liquid line solenoid valve of
compressor 2
S324 EL
HEAT1 Off
On,
Off.
Diagnosis switch of electric heater 1. The ‘On’ setting of
this parameter can start electric heater 1 only when the