Trane CVHF Information Manual

Diagnostics Menu
Information Manual 65
Table 6
Diagnostic Table
DIAGNOSTIC DESCRIPTION
Diag
Type
Module
that
Called
Diag.
Diag.
Active
Modes
CAUSE Help Message
Adapt Freq Drive Fault Relay
Open
MMR Starter All Start
and Run
Mode
The Adaptive Frequency Drive fault relay is
open.
See Adaptive
Frequency Drive
Service Bulletin,
check for an
open wire.
At Speed Input Shorted MMR Starter Pre-Start 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.
Check End of
Limt/At Speed
Input
At Speed Input Opened MMR Starter All
Running
Modes
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.
Check End of
Limt/At Speed
Input
Aux/Ht Rcvry Ent Water Temp
Sensor
IFW Options All Open or shorted and Heat Recovery is installed
(at the CLD).
Check Sensor,
Wiring, and
Connections
Aux/Ht Rcvry Lvg Water Temp
Sensor
IFW Options All Open or shorted and Heat Recovery is installed
(at the CLD).
Check Sensor,
Wiring, and
Connections
Bearing Temp Sensor #1 MMR Stepper All Open or Short, only if this option is enabled at
the Human Interface.
Check Sensor,
Wiring And
Connections
Bearing Temp Sensor #2 MMR Stepper All Open or Short, only if this option is enabled at
the Human Interface.
Check Sensor,
Wiring And
Connections
Check Clock IFW Chiller All 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.
Check Main
Power Supply,
Reset Clock
Check Oil Filter IFW Chiller All
Running
Modes
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.

Trane CVHF Specifications

General

Brand	Trane
Model	CVHF
Category	Chiller
Language	English