Diagnostics - Trane CGWF Installation Operation & Maintenance

Diagnostic Name
BAS Communication Lost
BAS Failed to Establish
Communication
Check Clock
Chilled Water Flow (Entering
Water Temp)
Circuit Pumpdown
Terminated
Condenser Entering Water
Temp Sensor
Condenser Leaving Water
Temp Sensor
Condenser Water Flow Lost Immediate NonLatch
Condenser Water Flow
Overdue
CGWF-SVX01A-EN

Diagnostics

The following diagnostic table contains all the diagnostics possible. Not all data is
available unless tech view is connected.
Code: Three digit hexadecimal code used on all past products to uniquely identify
diagnostics.
Diagnostic Name: Name of Diagnostic and its source. Note that this is the exact
text used in the User Interface and/or Service Tool displays.
Severity: Defines the severity of the above effect. Immediate means immediate
shutdown of the effected portion, Normal means normal or friendly shutdown of the
effected portion, Special Mode means a special mode of operation (limp along) is
invoked, but without shutdown, and Info means an Informational Note or Warning is
generated.
Persistence: Defines whether or not the diagnostic and its effects are to be manually
reset (Latched), or can be either manually or automatically reset (Nonlatched).
Criteria: Quantitatively defines the criteria used in generating the diagnostic and, if
nonlatching, the criteria for auto reset. If more explanation is necessary a hot link to
the Functional Specification is used.
Reset Level: Defines the lowest level of manual diagnostic reset command which
can clear the diagnostic. The manual diagnostic reset levels in order of priority are:
Local and Remote. A diagnostic that has a reset level of Local, can only be reset by a
local diagnostic reset command, but not by the lower priority remote Reset command
whereas a diagnostic listed as Remote reset can be reset by either.
Severity Persistence Criteria
Special NonLatch The BAS was setup as "installed" at the MP and the Comm 3 llid lost
communications with the BAS for 15 continuous minutes after it had
been established. Refer to setpoint arbitration to determine how
setpoints and operating modes may be effected by the comm loss.
The chiller follows the value of the Tracer Default Run Command
which can be previously written by Tracer and stored nonvolatilely by
the MP (either use local or shutdown).
Special NonLatch The BAS was setup as "installed" and the BAS did not communicate
with the MP within 15 minutes after power-up. Refer to setpoint
arbitration to determine how setpoints and operating modes may be
effected.
Warning Latch The real time clock had detected loss of its oscillator at some time in
the past. Check / replace battery? This diagnostic can be effectively
cleared only by writing a new value to the chiller's time clock using the
TechView or DynaView's "set chiller time" functions.
Immediate Latching The entering evaporator water temp fell below the leaving evaporator
water temperature by more than 2°F for 100°F-sec while at least one
compressor was running.
Warning Latching Operational Pumpdown is normally terminated by the Low Pressure
Cutout control. This indicates that the Low Pressure Cutout of circuit 1
or 2 did not open within 30 seconds from the start of Operational
Pumpdown which may indicate a faulty liquid line solenoid valve.
Going below 10 PSIG shall terminate Service Pumpdown. This
indicates that the suction pressure of circuit 1 or 2 did not go below 10
PSIG within 1 minute from the start of Service Pumpdown.
Warning Latch Bad Sensor or LLID.
Warning Latch Bad Sensor or LLID
After flow had been proven the condenser water flow input was open
for more than 6 continuous seconds. This diagnostic is automatically
cleared once all circuits are de-energized.
Normal NonLatch Condenser water flow was not proven within 20 minutes of the
condenser water pump relay being energized. The condenser water
pump shall not be commanded on by this diagnostic. Diagnostic is
reset with return of condenser water flow (although only possible with
external control of pump)
Reset
Level
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
73