Trane CGAN 209-214, CCUN 205-211, CH530 Main Processor Diagnostics, CG-SVU02B-E4, Persistence

Diagnostics

Table 5 - Main Processor Diagnostics

				Active
Diagnostic Name	Effects	Severity	Persistence	Modes	Criteria	Reset
				[Inactive		Level
				Modes]
MP: Reset Has Occurred	Chiller	Warning	NonLatch	All	The main processor has successfully come out of a reset and	NA
					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.
Low Pressure Cutout	Circuit	Immediate	Latch	Starting and	The suction refrigerant pressure (gauge) fell below the given	Local
				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
High Motor Temp/Overload	Cprsr	Immediate	Latch	All	• The High Motor Temperature or the Compressor Overload	Local
					switch remained open for more than 35 minutes.
					• Five compressor fault diagnostics have occurred within the
					last 210 minutes.
Compressor Fault	Cprsr	Immediate	NonLatch	All	The High Motor Temperature or the Compressor Overload	Local
					switch input is open.
BAS Failed to Establish	Chiller	Special	NonLatch	At power-up	The BAS was setup as "installed" and the BAS did not	Remote
Communication					communicate with the MP within 15 minutes after power-up.
BAS Communication Lost	Chiller	Special	NonLatch	All	The BAS was setup as "installed" at the MP and the Comm	Remote
					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).
External Chilled/Hot Water	Chiller	Warning	NonLatch	All	a. Function Not "Enabled": no diagnostics.	Remote
Setpoint					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.
External Demand Limit	Chiller	Warning	NonLatch	All	a. Function Not "Enabled": no diagnostics.	Remote
Setpoint					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.
Circuit Pumpdown	Circuit	Warning	Latch	Operational/	Going below the low pressure setting + 0.2 bar shall terminate	Remote
Terminated				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]
Chilled Water Flow (Entering	Chiller	Immediate	Latch	Any Ckt(s)	The entering evaporator water temperature fell below the	Remote
Water Temp)				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]

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