AL56 Primary Return Sensor (RTS)

Cause

• Invalid Return Temperature Sensor (RTS) reading.

Components	Troubleshooting	Corrective actions
Return Temperature Sensor (RTS)	Perform Pre-trip P5:	If P5 passes, no further action is required.
		If P5 fails, replace the defective sensor as determined by P5, refer to TEMPERATURE SENSOR Service Section 6.24.