Chapter 5 iCOM Controller 59
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
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 bar - Actual LP 1
S309 LP2 ACT bar - Actual LP 2
S310 LP1 ACT bar - Actual LP 1
S311 LP2 ACT bar - 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 air loss is
normal
S325 EL HEAT2 Off On, Off.
Diagnosis switch of electric heater 2. The ‘On’ setting of this
parameter can start electric heater 2 only when the air loss is
normal
S326 EL HEAT3 Off On, Off.
Diagnosis switch of electric heater 3. The ‘On’ setting of this
parameter can start electric heater 3 only when the air loss is
normal
S327 SCR HEAT - 0 ~ 100 % SCR Heat
S328 DEHUMl Off On, Off Diagnostic switch of Dehumidification solenoid valve
S329 HUM FILL Off On, Off
Diagnosis switch of solenoid valve of water supply to the
humidifier
Group 1
S330 HUM Off On, Off
Diagnosis switch of humidifier. The ‘On’ setting of this
parameter can start the humidifier only when the air loss is
normal
Liebert.PEX2 Series Air Conditioner User Manual
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