Installation, Operation and Maintenance 10 - 11
Starter Fault Type
II
MMR Immediate a. This is a specific starter test where the Shorting Contactor (1K3)
is individually energized and a check is made to ensure that there
are no currents detected by the CT’s. If current is detected when
only S is energized at Start, then 1K1 is shorted.
b. This test in a. applies to all forms of starters (Note: It is
understood that many starters do not connect to the Shorting
Contactor.).
See
Troubleshooting
Service Bulletin
Starter Fault Type
III
MMR Immediate a. As part of the normal start sequence to apply power to the
compressor the Shorting Contactor (1K3) and then the Main
Contactor (1M) were energized. 1.6 seconds later there were no
currents detected by the CT’s for the last 1.2 Seconds on all three
phases.
b. This test in a. above applies to all forms of starters except
Adaptive Frequency. Drives (Note: It is understood that many
starters do not connect to the Shorting Contactor.).
See
Troubleshooting
Service Bulletin
Starter: Loss of
Comm with
Chiller
MMR Immediate The starter module lost communications with the Chiller module for
15 continuous seconds.
Check IPC Wiring/
Connections
Starter Mod Ref
Voltage
Calibration
IFW N/A An improper reference voltage was detected at the Starter Module.
A 2.5 Vdc reference is used to calibrate the non-ratiometric analog I/
O such as 2-10Vdc and 4-20ma inputs as well as PWM Analog
outputs. The micro checks to see that the A/D value falls within an
acceptable range.
See
Troubleshooting
Service Bulletin
Stepper: Loss of
Comm with
Chiller
MMR Friendly The Stepper module lost communications with the Chiller module for
15 continuous seconds.
Check IPC Wiring/
Connections
Stepper: Loss of
Comm with
Starter
MMR Friendly The Stepper module lost communications with the Starter module
for 15 continuous seconds.
Check IPC Wiring/
Connections
TCI: Loss of
Comm with
Starter
IFW N/A The TCI module lost communications with the Starter module for 15
continuous seconds.
Check IPC Wiring/
Connections
TCI: Loss of
Comm with
Options
IFW N/A The TCI module lost communications with the Options module for
15 continuous seconds.
Check IPC Wiring/
Connections
TCI: Loss of
Comm with
Options
IFW N/A The TCI module lost communications with the Options module for
15 continuous seconds.
Check IPC Wiring/
Connections
TCI: Loss of
Comm with
Chiller
IFW N/A The TCI module lost communications with the Chiller module for 15
continuous seconds.
Check IPC Wiring/
Connections
TCI: Loss of
Comm with
Stepper
IFW N/A The TCI module lost communications with the Stepper #1 module
for 15 continuous seconds.
Check IPC Wiring/
Connections
Tracer
Communications
Lost
IFW N/A The Tracer was setup as “installed” at the CLD and the TCI lost
communications with the Tracer for 15 continuous minutes after it
had been established. Continue to run the chiller with the last valid
Tracer Setpoints/Mode.
Check Tracer to
UCP Wiring/
Connections
Tracer failed to
Establish Comm
IFW N/A The Tracer was setup as “installed” at the CLD and the Tracer did
not communicate with the TCI within 2 minutes after power-up.
Check Tracer
Wiring /
Connections /
Power
Tracer Outdoor
Air Temp Sensor
Fail
IFW N/A The Tracer has communicated to the UCP2 that its outdoor air
temperature sensor is not operational. Either UCP2’s outdoor air
sensor or default values for outdoor air temperature will be used.
Check Sensor,
Wiring, and
Connections
Diagnostic
Description
Diagnostic
Type
Shutdown
Action
Cause Help Message
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