Communication Diagnostics - Trane CGAM Installation & Operation Manual

Diagnostics
Outdoor Air Temp Sensor
Outdoor Air Temp Sensor
Outdoor Air Temp Sensor
Discharge Pressure Transducer
Discharge Pressure Transducer
Discharge Pressure Xdcr
Suction Pressure Transducer
Suction Pressure Transducer
Suction Pressure Xdcr
Suction Temperature Sensor
Suction Temperature Sensor
Suction Temperature Sensor
Discharge Temperature Sensor
Discharge Temperature Sensor
Discharge Temperature Sensor
Heat Recovery Entering Water Temp Sensor
Heat Recovery Entering Water Temp Sensor
HR Entering Wtr Temp Sensor
Heat Recovery Leaving Water Temp Sensor
Heat Recovery Leaving Water Temp Sensor
HR Leaving Wtr Temp Sensor

Communication Diagnostics

Note: 1. The following communication loss diagnostics will not occur unless that input or output
Diagnostic Name
Excessive Loss of Comm
Excessive Loss of Comm
Excessive Loss of Comm
Comm Loss: External Auto/Stop
Comm Loss: External Auto/Stop
Comm: External Auto/Stop
Comm Loss: Emergency Stop
Comm Loss: Emergency Stop
Comm: Emergency Stop
176
Chiller Normal
Circuit Immediate
Circuit Immediate
Circuit Immediate
Circuit Immediate
Chiller Warning
Chiller Warning
is required to be present by the particular configuration and installed options for the chiller.
2. Communication diagnostics (with the exception of "Excessive Loss of Comm" are named
by the Functional Name of the input or output that is no longer being heard from by the Main
Processor. Many LLIDs, such as the Quad Relay LLID, have more than one functional output
associated with it. A comm loss with such a multiple function board, will generate multiple
diagnostics. Refer to the Chiller's wiring diagrams to relate the occurrence of multiple
communication diagnostics back to the physical llid boards that they have been assigned
to (bound).
Affects Severity Persistence
Chiller Immediate
Chiller Normal
Chiller Normal
Latch All
Latch All
Latch All
Latch All
Latch All
Latch All
Latch All
Active Modes
[Inactive
Modes]
Loss of comm with 10 or more of the
LLIDs configured for the system has
been detected. This diagnostic will
Latch All suppress the callout of all subsequent
comm loss diagnostics. Check power
supply(s) and power disconnects –
troubleshoot LLID bus using TechView.
Continual loss of communication
Latch All between the MP and the Functional ID
has occurred for a 35-40 second period.
Continual loss of communication
Latch All between the MP and the Functional ID
has occurred for a 35-40 second period.
Bad Sensor or LLID.
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Bad Sensor or LLID
Reset
Criteria Level
Remote
Remote
Remote
CG-SVX17D-EN
Remote
Remote
Remote
Remote
Remote
Remote
Remote