Trane CVHG Information Manual

Diagnostics Menu
Information Manual 77
Purge Cprsr Suction Temp
Sensor
IFW Purge All Open or Shorted Sensor
a. IFW to the chiller, MMR to the Purge.
Purge Inop: See
Purge O & M
Manual
Purge Liquid Level Too High IFW Purge All a. The Level Switch at the purge opened for 6 to
10 Seconds.
Note: This was implemented as tripping in 2 A/D
samples, which are 0.4 seconds apart. Prior to 2/
2/95 only 1 A/D sample could trigger this
diagnostic.
b. IFW to the chiller, MMR to the Purge.
Purge Inop: See
Purge O & M
Manual
Purge: Loss of Comm with
Chiller
IFW Purge All The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
Check IPC
Wiring/
Connections
Purge: Loss of Comm with
Starter
IFW Purge All The purge module lost communications with the
starter module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
Check IPC
Wiring/
Connections
Purge: Loss of Comm with
Stepper
IFW Purge All The purge module lost communications with the
stepper module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
Check IPC
Wiring/
Connections
Purge: Loss of Comm with
Options
IFW Purge All The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, IFW to the Purge.
Check IPC
Wiring/
Connections
Purge: Loss of Comm w/
Retrofit CLD
IFW Purge All The purge module lost communications with the
retrofit Human Interface module for 15
contiguous seconds.
Check IPC
Wiring/
Connections
Purge: Loss of Comm with
Stepper #1
IFW Purge All The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
Check IPC
Wiring/
Connections
Purge: Loss of Comm with
Stepper #2
IFW Purge All The purge module lost communications with the
chiller module for 15 contiguous seconds.
a. IFW to the chiller, MAR to the Purge.
Check IPC
Wiring/
Connections
Purge Memory Error Type I:
NOVRAM
This diag. should be seen in
both UCP2 and retrofit
applications only.
MMR Purge On Purge
Power Up
or
following
a Type II
Memory
error
diag.
a. On either Purge Module power up or following
a Type II Memory Error, a NOVRAM memory
error was detected. The Purge Module is
operating on all Engineering Factory defaults for
all setup parameters. Check all setup
parameters and continue to run purge. Replace
the Purge Module as soon as a replacement is
available.
Note: It is expected that this diagnostic will be
detected on the very first power up of the Purge
Module at the Manufacturer since the NOVRAM
will not contain valid data on first power up.
Purge Inop: See
Purge O & M
Manual
Purge Memory Error Type II:
Shadow RAM
This diag. should be seen in
retrofit applications only.
IFW Purge All a. A Shadow RAM memory error was detected.
The Purge Module is operating on all last valid
values (pulled from NOVRAM) for all setup
parameters. No setup parameter changes were
pending to be loaded into NOVRAM, a complete
recovery of all setup parameters was made and
there is no need to check unit setup parameters.
Purge pumpout times Compressor starts and
hour were lost for not more than the last 24
hours. This is expected to be an isolated event
and repair or replacement is not required. If this
diagnostic does occur repeatedly, then replace
the Purge module.
No Setting Were
Lost
DIAGNOSTIC DESCRIPTION
Diag
Type
Module
that
Called
Diag.
Diag.
Active
Modes
CAUSE Help Message

Trane CVHG Specifications

General

Brand	Trane
Model	CVHG
Category	Chiller
Language	English