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Diag
Diagnostic Description
Type
Stepper #1 Loss of Comm
MMR
with Chiller
Stepper #1 Loss of Comm
MMR
with Starter
Surge Shutdown: Ice
MAR
Building
TCI: Loss of Comm with
IFW
Chiller
TCI: Loss of Comm with
IFW
Purge
TCI: Loss of Comm with
IFW
Starter
TCI: Loss of Comm with
IFW
Stepper #1
Tracer Communications Lost IFW
Tracer Failed to Establish
IFW
Comm
Tracer Temperature Sensor IFW
Transition Complete Input
MMR
Opened
Transition Complete Input
MMR
Shorted
Under Voltage
MAR
CVRC-M-1D
Diagnostics Tables
Diag Active
Modes
Cause
(Non-Active
Modes)
The Stepper #1 module lost communications with the Chiller
All
module for 15 contiguous seconds.
The Stepper #1 module lost communications with the Starter
All
module for 15 contiguous seconds.
All ice
An extended surge condition was detected while in Ice Building
building
Mode. This diagnostic shall clear when the Ice Building
modes
command is withdrawn.
The TCI module lost communications with the Chiller Module
All
for 15 contiguous seconds.
The TCI module lost communications with the Purge Module
All
for 15 contiguous seconds.
The TCI module lost communications with the Starter Module
All
for 15 contiguous seconds.
The TCI module lost communications with the Stepper #1
All
Module for 15 contiguous seconds.
The Tracer was setup as "installed" at the CLD and the TCI lost
communications with the Tracer for 15 contiguous minutes
All
after it has been established. Continue to run the chiller with
the last valid Tracer Setpoints/Mode.
The Tracer was setup as "installed" at the CLD and the Tracer
At power-up
did not communicate with the TCI within 2 minutes after
power-up.
All
Input Shorted
a. The Transition Complete input was found to be opened with
the compressor motor running after a successful completion of
All running
the transition.
modes
b. This is active only for Y-Delta, Auto-Transformer and
Primary Reactors starters.
a. The Transition Complete input was found to be shorted
Pre-start
before compressor was started.
b. This is active for all electromechanical starters.
A. Line voltage below - 10% of nominal or the
Under/Overvoltage transformer is not connected. (Must hold =
Pre-start and
-10% of nominal. Must trip = -15% of nominal. Reset
any Ckt(s)
differential = min. Of 2% and max. of 4%. Time to trip = min.
energized
Of 1 min. And max. Of 5 min.)
Design: Nom. Trip: 60 seconds at less than 87.5%, + or = 2.8%
at 200V or + or -1.8% at 575V, Auto Reset at 90.5% or greater.
Help Message
Check IPC, Wiring and
Connections
Check IPC, Wiring and
Connections
See Troubleshooting
Service Bulletin
CVHE-SB-32
Check IPC, Wiring and
Connections
Check IPC, Wiring and
Connections
Check IPC, Wiring and
Connections
Check IPC, Wiring and
Connections
Check Tracer to UCP
Wiring/Connections
Check Tracer
Wiring/Connections/Power
Check Sensor Wiring and
Connections
Check transition complete
contact
Complete Starter
Checkout Required.
Check Main Power Supply
and Wiring
109
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