Trane Optimus RTHD, Installation, Operation And Maintenance Manual

Page: 76 / 96

Diagnostics
76 RTHD-SVX01K-EN
Main Processor Diagnostics
AFD Output
Phase Loss
Chiller Immediate Latching
Compressor
Running
Drive sensed an output phase is missing. Output phase
loss is defined as greater than 15% output current
imbalance for more than 5.0 seconds.
Local
AFD Rated
Current out of
Range
Chiller Warning Latching All
The configuration motor rated current bigger than AFD
rated current
Local
Comm Loss:
Adaptive
Frequency Drive
Chiller Normal Non-Latching All
Continual loss of communication between the MP and
the Functional ID has occurred for a 6-10 second
period.
Local
High Pressure
Cutout
Chiller Immediate Latching All The high pressure hardware switch was tripped.
Table 25. Local communication drive diagnostics (continued)
Diagnostic
Name and
Source
Affects
Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Table 26. Main processor diagnostics
Diagnostic
Name and
Source
Affects
Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
AFD Output
Power Input
Chiller Warning NonLatch All
"Out-Of-Range Low or Hi or bad LLID, set diagnostic, This
Info diagnostic will automatically reset if the input returns
to the normal range."
Remote
Compressor
Discharge
Temperature
Sensor
Chiller Immediate Latch All Bad Sensor or LLID Remote
Condenser Diff
Water Pressure
Xdcr
Chiller Warning Latching All
Defective Sensor or LLID
Display invalid value.
Flow calculation shall be disabled.
Remote
Condenser
Entering Water
Temp Sensor
Chiller
Warning
and Special
Action
Latch All
Bad Sensor or LLID. If chiller running, and condenser water
regulating valve option installed, force valve to 100% flow.
Remote
Condenser
Leaving Water
Temp Sensor
Chiller Warning Latch All Bad Sensor or LLID Remote
Condenser Rfgt
Pressure
Transducer
Chiller Normal Latch All Bad Sensor or LLID Remote
Condenser
Water Flow Lost
Chiller Immediate NonLatch
Start and All Run
Modes
The condenser water flow proof input was open for more
than 6 contiguous seconds after flow had been proven.
This diagnostic is automatically cleared once the
compressor is stopped by a fixed time out of 7 sec. The
Cond Pump shall be commanded off but the Evap pump
command will not be effected.
Remote
Condenser
Water Flow
Overdue
Chiller Normal NonLatch
Estab Cond Water
Flow - or for 1st 10
sec after Ignore DP
setting is reached if
Cond Wtr Flow
Proving Ignore is
enabled Condenser water flow was not proven within 20 minutes of
the condenser pump relay being energized. The Cond
Pump shall be commanded off. Diagnostic is reset with
return of flow (although only possible with external control
of pump). This diagnostic may also occur if Cond Wtr Flow
Proving Ignore is enabled, and flow is not immediately
proven as the Ignore DP setting is reached."
Remote
Economizer
Pressure Sensor
Chiller Normal Latch All Bad Sensor or LLID Remote
Economizer
Temperature
Sensor
Chiller Normal Latch All Bad Sensor or LLID Remote
Emergency Stop Chiller Immediate Latch All
EMERGENCY STOP input is open. An external interlock has
tripped. Time to trip from input opening to unit stop shall
be 0.1 to 1.0 seconds.
Local