Carrier D2-3466-2 Identifying Fault Codes and Recovering, Fault Cause, Description

6.4.2 Identifying Fault Codes and Recovering

ATTENTION: DC bus capacitors retain hazardous voltages after input power has been disconnected. After disconnecting input power, wait five

!minutes for the DC bus capacitors to discharge and then check the voltage with a voltmeter to ensure the DC bus capacitors are discharged before touching any internal components. Failure to observe this precaution could result in severe bodily injury or loss of life.

Drive fault codes are shown in table 6.3. To clear a single fault that has occurred so that the drive can be started again, correct any problems indicated by the fault code and press the STOP/RESET key on the keypad, or assert the fault reset from the selected control source (P.000). Because multiple faults can occur and only the first will be displayed, you must access the error log in order to view all of the faults that have occurred. See section 6.4.3 for instructions on how to view the error log.

Table 6.3 – List of Fault Codes

	Fault
Code	Description	Fault Cause	Corrective Action
AIn	Analog input signal	P.011 = 4 or 5 and 4 to 20 mA analog	Verify that P.011 is set correctly.
	loss	input is below 1 mA.	Check that the analog input source
			supply ≥1 mA.
bYC	Incorrect precharge	Precharge initiated and incorrect	Check operation of the precharge.
	status	precharge status is returned.
CHS	Default parameter	During drive operation:	Contact Reliance or replace Regulator
	restore (checksum	Regulator board failure.	board.
	error)	After Regulator board replacement:	Contact Reliance.
EC	Earth current failure	Unintentional grounding of the input.	Check isolation between ground and
	(ground fault)		output terminals. Possible leakage,
			current sensor defects; replace
			sensor.
EEr	Non-volatile	Failure on write to non-volatile	Connect CS3000 software to upload
	memory write	memory.	parameters or record by hand. Then
	failure		replace Regulator board. Parameter
			values will be lost when power is
			cycled.
EL	Encoder loss	Drive is not detecting feedback from	Check the connection between the
		the encoder.	encoder and the drive. Check the
			encoder/motor coupling.
		For SVC operation, conditions exist for	For SVC operation, check motor data
		more than 5 seconds that may result in	parameters. Check U.006. Incorrect
		an inability to complete a ramp-to-rest	magnetizing current may be generated
		stop.	by performing self-tuning with a load
			connected to the motor.
FL	Function loss	Function loss input on control terminal	Check external interlocks at terminals
		is opened.	16, 20.
HId	High time	Identification process for V/Hz has	See H.019 for identification result.
	identification	been aborted.
	aborted
HIL	High line voltage	Input voltage more than 15% above	Check actual line voltage against
		nominal.	U.018 or H.021.

6-8 Carrier VFD Quick Reference