GE Medium Voltage GP Type G Drives HtSink temp Trip, Heatsink thermal sensor input is not present

No.	Name	Type	Description
77	HtSink DS rise high	Alarm	The HtSink DS rise high alarm occurs when the diode source heatsink
			temperature (variable DS heat sink temp) is too far above the ambient
			temperature (variable Bridge ambient temp).
			Related functions:
			Heatsink Thermal Protection
78	HtSink A rise high	Alarm	The HtSink A rise high alarm occurs when heatsink A temperature (variable
			Heat sink A temp) is too far above the ambient temperature (variable Bridge
			ambient temp).
			Related functions:
			Heatsink Thermal Protection
79	HtSink B rise high	Alarm	The HtSink B rise high alarm occurs when heatsink B temperature (variable
			Heat sink B temp) is too far above above the ambient temperature (variable
			Bridge ambient temp).
			Related functions:
			Heatsink Thermal Protection
80	HtSink C rise high	Alarm	The HtSink C rise high alarm occurs when heatsink A temperature (variable
			Heat sink C temp) is too far above above the ambient temperature (variable
			Bridge ambient temp).
			Related functions:
			Heatsink Thermal Protection
81	HtSink temp	Trip	The HtSink temp imbalanc trip fault occurs when two of the measured heatsink
	imbalanc		temperatures differ by an amount exceeding heatsink imbalance fault level.
			The main purpose of the trip fault is to detect the absence of a thermal sensor
			input from the heatsink, the failure of the sensor itself or heat pipe failure.
			Primary causes:
			A heatsink thermal sensor input is not present.
			A heatsink thermal sensor is defective
			The heatpipe system is defective.
			Possible board failures:
			BICM
			Related functions:
			Heatsink Thermal Protection
82	HtSink blower	Trip	The HtSink blower failed trip fault occurs when the drive is running and the
	failed		cooling fans are not operating.
			Primary causes:
			Blower starter tripped due to blower motor overload or failure.
			Related functions:
			Heatsink Thermal Protection
83	Run permissive lost	Alarm	The Run permissive lost alarm occurs when the run permissive circuit is open.
			The state of the run permissive circuit is determined by the value of the
			variable to which parameter Run permissive sel points. The alarm can be
			disabled by setting parameter Run permissive sel equal to Unused.
			Related functions:
			Sequencer Permissives
84	Cont req while flt	Alarm	The Cont req while flt alarm occurs when contactor A is commanded to close
			and a trip fault is present in the drive.

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 2 Faults and Troubleshooting • 2-15