Diagnostics Menu
72 CVHE-CLD-1A
High Oil Temp MMR Circuit All
starting
and
running
Modes
UCP2 shall provide a fixed High Oil Temperature
Cutout of 180 °F (82.2°C). If the oil temperature
violates the cutout by 120 degree F seconds
(66.6 degree C seconds) an MMR diagnostic
shall be generated.
Check Oil
System
High Pressure Cutout Tripped MMR Circuit All A high pressure cutout was detected. See the
trip points for the various products under the
HPC switch description of this specification.
Check
Condenser
Water Temp.
High Restart Inhibit Timer
Warning
IFW Starter All The Restart Inhibit timer has reached a
maximum threshold for the host chiller. For CTV
chillers this is 45 minutes. This indicates
excessive chiller cycling, steps should be taken
to correct this.
Check for
Excessive
Chiller Cycling
High Vacuum Lockout MMR Circuit Pre-Start The Oil Tank Pressure transducer shall be used
to sense for very low pressures in all Non-
running cprsr modes.
See
Troubleshooting
Service Bulletin
IGV BPI Not Found During
Search
IFW Stepper All The Inlet Guide Vane Actuator Binary Position
Indicator was not found over the entire stroke of
the IGV during the BPI search.
See
Troubleshooting
Service Bulletin
IGV BPI Found Low During
Search
IFW Stepper All The Inlet Guide Vane Actuator Binary Position
Indicator was found too low in the stroke of the
IGV during the BPI search.
Check Stepper
Module, Wiring,
& Motor
IGV BPI Shorted IFW Stepper Pre-Start At what is believed to be a closed position, the
IGV BPI was found to be shorted.
Check Sensor,
Wiring, and
Connections
IGV Electrical Drive Circuit
Open
MMR Stepper On
Demand
and
Pre-Start
Run the IGV Actuator electrical drive circuit test
both on demand from the human interface and
just before the chiller starts.
See
Troubleshooting
Service Bulletin
Incorrect Chiller Software
Installed
MMR Chiller All The incorrect Eprom was loaded into this
module. This diagnostic is detected when a
factory test computer sets the unit type to
something other than what the Eprom software
was intended for.
(No message is
required.)
Incorrect Stepper Software
Installed
MMR Stepper All The incorrect Eprom was loaded into this
module. This diagnostic is detected when a
factory test computer sets the unit type to
something other than what the Eprom software
was intended for.
(No message is
required.)
Inlet Guide Vane Closure
Overdue
IFW I/O All Non-
running
modes,
Starting,
Pre-Stop
(IGV
manual
modes)
a. The inlet guide vanes were commanded to
close and did not close in the three minutes
allowed for closure.
Check Clsd End-
Switches,
Vanes, Wiring
I/O Mod: Loss of Comm with
Chiller
IFW I/O All The I/O module lost communications with the
Chiller module for 15 contiguous seconds.
Check IPC
Wiring/
Connections
Invalid Starter Selection MMR Starter All Modes The Cld has been setup for an AFD starter type,
however the starter module is not AFD
compatible.
(Note: This feature is not supported by
hardware.) (Special Note not for Publishing; See
Starter Module Design Specification for
requirements to enable AFD operation.)
Call Local Trane
Service Agency
DIAGNOSTIC DESCRIPTION
Diag
Type
Module
that
Called
Diag.
Diag.
Active
Modes
CAUSE Help Message
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