Trane CVHE Information Manual page 70

Table 6
Diagnostic Table
DIAGNOSTIC DESCRIPTION
Adapt Freq Drive Fault Relay
Open
At Speed Input Shorted
At Speed Input Opened
Aux/Ht Rcvry Ent Water Temp
Sensor
Aux/Ht Rcvry Lvg Water Temp
Sensor
Bearing Temp Sensor #1
Bearing Temp Sensor #2
Check Clock
Check Oil Filter
Information Manual
Diag Module Diag.
Type that Active
Called Modes
Diag.
MMR Starter All Start
and Run
Mode
MMR Starter Pre-Start
MMR Starter All
Running
Modes
IFW Options All
IFW Options All
MMR Stepper All
MMR Stepper All
IFW Chiller All
IFW Chiller All
Running
Modes
CAUSE
The Adaptive Frequency Drive fault relay is
open.
a. Using either a Solid State Starter or an
Adaptive Frequency Drive, the Up to Speed/At
Speed input was found to be shorted before the
compressor was started.
b. Applies only to Solid State Starters and
Adaptive Frequency Drives.
a. The At Speed input was found to be opened
with the compressor motor running after
successfully obtaining at speed condition.
b. Applies only to Solid State Starters.
Open or shorted and Heat Recovery is installed
(at the CLD).
Open or shorted and Heat Recovery is installed
(at the CLD).
Open or Short, only if this option is enabled at
the Human Interface.
Open or Short, only if this option is enabled at
the Human Interface.
On loss of power the clock does not keep time, if
there is an extended power loss (greater than 15
seconds) this diag. is also generated to alert the
operator to check the clock.
a. The differential oil pressure fell below the
Check Oil Filter Setpoint for 1000 psid-seconds
and the Check Oil Filter Diagnostic setpoint is
enabled.
b. This diagnostic shall not be active for 15
minutes after the compressor is started.
c. This IFW diagnostic will automatically reset
when the differential oil pressure rise above the
Check Oil Filter Setpoint for 1000 psid-seconds
or the compressor is not running.
Diagnostics Menu
Help Message
See Adaptive
Frequency Drive
Service Bulletin,
check for an
open wire.
Check End of
Limt/At Speed
Input
Check End of
Limt/At Speed
Input
Check Sensor,
Wiring, and
Connections
Check Sensor,
Wiring, and
Connections
Check Sensor,
Wiring And
Connections
Check Sensor,
Wiring And
Connections
Check Main
Power Supply,
Reset Clock
65