Trane CVHE Information Manual page 76

DIAGNOSTIC DESCRIPTION
Free Cooling Valves
Heat Sink Temp Sensor
HGBP Valve Closure Overdue
High Bearing #1 Temp
High Bearing #2 Temp
High Cprsr Discharge Temp.
High Motor Temp Position #1
High Motor Temp Position #2
High Motor Temp Position #3
Information Manual
Diag Module Diag.
Type that Active
Called Modes
Diag.
MMR Options When
exiting
Free
cooling
IFW Starter All
IFW
MMR Stepper All
starting
and
running
modes
MMR Stepper All
starting
and
running
modes
MAR Stepper All
MMR Circuit Any Start
and Run
Mode
MMR Circuit Any Start
and Run
Mode
MMR Circuit Any Start
and Run
Mode
CAUSE
a. The Free Cooling Valves were commanded to
close and did not close in the three minutes
allowed for closure. And FC is installed (at the
CLD) and commanded off.
b. The Free Cooling Valves were commanded to
open and did not open in the three minutes
allowed for closure. And FC is installed (at the
CLD) and commanded On.
Open or Short and Solid State Starter installed.
Note: The Solid State Starter is expected to be
protected from overheating via a thermal cutout.
Since this sensor is not used to protect the
starter, the failure of the sensor is treated as an
IFW.
a. The HGBP Valve was commanded to close
and did not close in the three minutes allowed for
closure
a. The bearing temperature at sensor #1
exceeded 180 + or - 5 °F (82.2 °C) for 0.5 - 2
seconds (Note: BT, WT, and DT may be
"instantaneous trip" but consistent with the
analog input filtering function.), and
b. This function is enabled at the CLD.
a. The bearing temperature at sensor #2
exceeded 180 + or - 5 °F (82.2 °C) for 0.5 - 2
seconds (Note: BT, WT, and DT may be
"instantaneous trip" but consistent with the
analog input filtering function.), and
b. This function is enabled at the Human
Interface.
a. The discharge temp. exceeded the trip value;
200°F + or - 5°F for CVHE/F, CVG and CVA.
The Discharge Temp Cutout is adjustable at the
Human Interface. See also section
P4_CPRSR.Doc of this Functional Specification.
b. Time to trip from trip value exceeded shall be
0.5 to 2.0 seconds. (Note: BT, WT, and DT may
be "instantaneous trip" but consistent with the
analog input filtering function.)
d. The diag. shall reset automatically 50 °F
below the trip point.
The Motor winding temp. at sensor #1 exceeded
265 °F + or - 15°F for 0.5 - 2 seconds. (Note: BT,
WT, and DT may be "instantaneous trip" but
consistent with the analog input filtering
function.)
The Motor Winding Temp. at sensor #2
exceeded 265 °F + or - 15 °F for 0.5 - 2 seconds.
(Note: BT, WT, and DT may be "instantaneous
trip" but consistent with the analog input filtering
function.)
The Motor Winding Temp. at sensor #3
exceeded 265° F + or - 15° F for 0.5 - 2 seconds.
(Note: BT, WT, and DT may be "instantaneous
trip" but consistent with the analog input filtering
function.)
Diagnostics Menu
Help Message
Check Clsd End-
Switches,
Valves, Wiring
Check Sensor
Wiring And
Connections
Check Clsd End-
Switches,
Valves, Wiring
Check Oil
System
Check Oil
System
See
Troubleshooting
Service Bulletin
See
Troubleshooting
Service Bulletin
See
Troubleshooting
Service Bulletin
See
Troubleshooting
Service Bulletin
71