Trane CCUN 205-211 User Manual page 25

Table 5 - Main Processor Diagnostics
Diagnostic Name
MP: Reset Has Occurred
Low Pressure Cutout
High Motor Temp/Overload
Compressor Fault
BAS Failed to Establish
Communication
BAS Communication Lost
External Chilled/Hot Water
Setpoint
External Demand Limit
Setpoint
Circuit Pumpdown
Terminated
Chilled Water Flow (Entering
Water Temp)
CG-SVU02B-E4
Diagnostics
Effects Severity Persistence
Chiller Warning NonLatch
Circuit Immediate Latch
Cprsr Immediate Latch
Cprsr Immediate NonLatch
Chiller Special NonLatch
Chiller Special NonLatch
Chiller Warning NonLatch
Chiller Warning NonLatch
Circuit Warning Latch
Chiller Immediate Latch
Active
Modes
Criteria
[Inactive
Modes]
All The main processor has successfully come out of a reset and
built its application. A reset may have been due to a power up,
installing new software or configuration. This diagnostic is
immediately and automatically cleared and thus can only be
seen in the historic diagnostic list.
Starting and The suction refrigerant pressure (gauge) fell below the given
Running threshold for the refrigerant installed:
[Stop, See • 0.7 bar for R22 and R407c
criteria] • 0.3 bar for R134a
• 1.0 bar for R410a
All • The High Motor Temperature or the Compressor Overload
switch remained open for more than 35 minutes.
• Five compressor fault diagnostics have occurred within the
last 210 minutes.
All The High Motor Temperature or the Compressor Overload
switch input is open.
At power-up The BAS was setup as "installed" and the BAS did not
communicate with the MP within 15 minutes after power-up.
All 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. 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).
All a. Function Not "Enabled": no diagnostics.
b. "Enabled ": Out-Of-Range Low or Hi or bad LLID, set
diagnostic, default CWS/HWS to next level of priority (e.g.
Front Panel SetPoint). This Warning diagnostic will automatically
reset if the input returns to the normal range.
All a. Function Not "Enabled": no diagnostics.
b. "Enabled ": Out-Of-Range Low or Hi or bad LLID, set
diagnostic, default DLS to next level of priority (e.g. Front Panel
SetPoint). This Warning diagnostic will automatically reset if the
input returns to the normal range.
Operational/ Going below the low pressure setting + 0.2 bar shall terminate
Service Service Pumpdown. This indicates that the suction pressure of
Pumpdown circuit 1 or 2 did not go below the low pressure setting + 0.2
[All Except bar within 1 minute from the start of Service Pumpdown.
Operational
and Service
Pumpdown]
Any Ckt(s) The entering evaporator water temperature fell below the
Energized leaving evaporator water temperature by more than 1.7°C for
[No Ckt(s) 37°C sec while at least 1 compressor was running.
Energized]
Reset
Level
NA
Local
Local
Local
Remote
Remote
Remote
Remote
Remote
Remote
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