Trane Tracer CH530 - Page 47

Diagnostics
47RLC-SVU05A-E4
Diagnostic Name Affects
Ta r g e t
Severity Persistence Active
Modes
[Inactive
Modes]
Criteria Reset
Level
Comm Loss: Heat/Cool
Switch
Heat
Mode
Special Action Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. The
external input shall revert to normal (cooling) request
regardless of last state. Chiller mode shall follow "OR"
arbitration for heating/cooling mode, i.e. If any of the
remaining inputs (front panel of BAS) are requesting heat
mode, then the chiller shall be in heat mode.
Remote
Comm Loss: Outdoor Air
Temperature
Chiller RTUD with
ACFC#NONE-
Normal
Shutdown;
OATS=INST-
Special Action
Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. If the
outdoor temperature is used for CHW reset, there shall be
no CHW reset. Apply slew rates per Chilled Water Reset
spec. For RTUD if this diagnostic occurs, operational
pumpdown will be performed regardless of the last valid
temperature. For RTWD, if installed for low ambient
lockout, there shall be no lockout
Remote
Comm Loss: Evaporator
Leaving Water Temperature
Chiller Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Evaporator
Entering Water
Temperature
Chiller Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Note:
Entering Water Temp Sensor is used in EXV pressure
control as well as ice making & CHW reset, so it must
cause a unit shutdown even if Ice or CHW reset is not
installed.
Remote
Comm Loss: Condenser
Leaving Water Temperature
Chiller Info and Special
Action
Latch All RTWD Only: Continual loss of communication between the
MP and the Functional ID has occurred for a 30 second
period. If Chiller is running in the heat mode of operation -
normal shutdown, otherwise, informational only.
Discontinue Min Capacity Limit forced cprsr loading due to
Low DP in subsequent startups.
Remote
Comm Loss: Condenser
Entering Water
Temperature
Chiller Info and Special
Action
Latch All RTWD Only: Continual loss of communication between the
MP and the Functional ID has occurred for a 30 second
period. If chiller running, and condenser water regulating
valve option installed, force valve to 100% flow.
Remote
Comm Loss: Discharge
Temperature Circuit 1,
Cprsr 1A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Discharge
Temperature, Circuit 2 ,
Cprsr 2A
Circuit Normal Latch All
Continual loss of communication between the MP and
the Functional ID has occurred for a 30 second period.
Remote