Figure 102 Diagnostics/Service Mode Screen - Emerson Liebert iCOM Manual

S31B Low Diff Lockout C1 / C2—Resets a Low Diff C(#= 1 or 2) Lockout. The status is No. If a
when a lockout is present, the value changes to Yes.
Figure 102 Diagnostics/service mode screen, page 2 of 8
Standard Compressor Screen
S313 Manual Mode—Places the Liebert iCOM in manual mode. This is the initial setting necessary
to activate any of the following items.
Manual Mode is used a diagnostic tool to test components and operation of the unit. This is useful
when testing components such as fans, LLSV, compressors and actuators to validate operation and
performance. To use manual mode, enter the level 2 password, 5010, and select YES on line S313.
With the exception of compressor evacuate mode, Manual Mode will time out after 30 minutes of
inactivity. When finished running components in manual mode, change line S313 back to No. All the
corresponding components changed with Manual Mode enabled will go back to normal. The unit will
resume operation as it was before Manual Mode was enabled. Safety routines such as overload
alarms, high pressure lockout, etc., will prevent some features from being used. If an alarm has been
disabled but is active, some Manual Mode functions will not work.
S314 Motor(s)—Starts the unit's main fan. The main fan must be On before any of the following
overrides can be activated. Compressor evacuate mode does not require motor(s).
S315 Compressor 1 Mode—Read-only status when Manual mode is not enabled. If Manual mode is
enabled, this parameter selects the mode of compressor operation. The choices are Run, Evacuate and
Charge. To access any mode, press the Enter key while S315 is highlighted. The compressor mode
may be changed by pressing the Up or Down arrow key. Once the desired mode is shown, press the
Enter key. The compressor state on the following line must be placed to On if Run or Charge modes
have been selected.
No further action is required for evacuate mode.
• Run: This function allows the compressor to run at any given capacity. The compressor capacity
can be adjusted on line S317.
• Evacuate: This function allows all solenoid valves in the refrigerant circuit to open while the
compressor remains in Off. This mode is can be used for either leak checking or evacuation. This
mode does not have a timeout period.
• Charge Mode: This function allows the compressor to run at 100% loaded capacity for 30 minutes
at a time. The suction pressure must be at least 15 psi or the compressor will be stopped.
S316 Compressor 1—Standard compressor models. Read-only status when Manual mode is not
enabled. When Manual mode is enabled, the parameter(s) can be changed from No to Yes, allowing
the compressor to operate as defined on the previous line.
S316 Compressor 1B / 1A—Tandem compressor models. Read-only status when Manual mode is not
enabled. When Manual mode is enabled, the parameter(s) can be changed from No to Yes, allowing
the compressor to operate as defined on the previous line.
The information in the Diagnostics > Service Mode, page 2 of
8, will vary according to the compressor type installed.
Tandem Compressor Screen
125
Service Menu Parameters
® ®
Liebert iCOM for Liebert DSE
™