Service-Diagnostics / Service Mode Screens; Figure 101 Diagnostics/Service Mode Screen - Emerson Liebert iCOM Manual

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. The Liebert iCOM
Service Diagnostics menu has been updated to reflect the Tandem Digital
Compressor Set. This update is accomplished in two ways throughout the menus: by either a change
to the line description or by adding of a column heading at the top of the menu to separate parameters
for the 'A' Compressor (Digital) and 'B' Compressor (Fixed). Refer to Figure 102 for examples of each.
Figure 101 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.
S31A EEV Batt Fail Counter C1 / C2—The Liebert iCOM monitors battery life with periodic tests
using the electronic expansion valve board. If a battery fails a test, the Liebert iCOM control reports
an EEV# (#= 1 or 2) BATTERY WARNING or EEV# (#= 1 or 2) BATTERY FAILURE event. This
parameter acts as a counter. Once a battery issue is detected, a value of 1 is added to the
corresponding EEV battery field. The EEV Circuit 1 counter is on the left and the Circuit 2 counter is
on the right. Once the issue is address (battery replaced, etc.), the service technician should reset the
counter to 0. If the battery problem is not addressed within 24 hours of the warning or failure, the
counter will increase by 1. Once the counter reaches 2, an EEV# (#= 1 or 2) BATTERY FAILURE will
occur and the circuit will be locked out.
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Liebert iCOM for Liebert DSE
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Service Menu Parameters