User manual

Service Menu Parameters
141 Liebert
®
iCOM
®
8.4 Service-Diagnostics / Service Mode Screens
Service-Diagnostics / Service Mode provides troubleshooting tools including alarm counters, manual
mode, readable analog and digital inputs/outputs and other diagnostic features.
Figure 123 Diagnostics/service mode screen, page 1 of 8
S302 HP 1 Alarm Code—Compressor 1 high pressure alarm code: 0 = no alarm; 2 = high-pressure
alarm active.
S303 HP 2 Alarm Code—Compressor 2 high pressure alarm code: 0 = no alarm; 2 = high-pressure
alarm active.
S304 HT 1 Alarm Counter—Compressor 1 high temperature event alarm counter. If more than five
events in a rolling 4 hour period occur, then the compressor will be locked out.
S305 HT 2 Alarm Counter—Compressor 2 high temperature event alarm counter. If more than five
events in a rolling 4 hour period occur, then the compressor will be locked out.
S306 LP 1 Alarm Code—Compressor 1 low-pressure alarm code: 0 = no alarm; 2 = low-pressure
alarm active.
S307 LP 2 Alarm Code—Compressor 2 low-pressure alarm code: 0 = no alarm; 2 = low-pressure
alarm active.
S308 Actual LP1 Pressure—Current refrigerant low pressure side reading in gauge for
Compressor 1.
S309 Actual LP2 Pressure—Current refrigerant low pressure side reading in gauge for
Compressor 2.
S310 Actual HP1 Pressure—Current refrigerant high pressure side liquid reading in gauge for
Compressor 1. (This is available only on water cooled or glycol units equipped with motorized ball
valves.)
S311 Actual HP2 Pressure—Current refrigerant high pressure side liquid reading in gauge for
Compressor 2. (This is available only on water-cooled or glycol-cooled units equipped with motorized
ball valves.)