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

6.4.1 Identifying Alarm Codes and Recovering

Drive alarm codes are shown in table 6.2. Note that the alarm code will only be displayed for as long as the problem exists. Once the problem has been corrected, the alarm code will disappear from the display.

Table 6.2 – List of Alarm Codes

	Alarm
Code	Description	Alarm Cause	Corrective Action
HIdc	High DC bus	The DC bus is charged above the	Increase the deceleration time in
	voltage	trip threshold. (If U.018 > 415,	P.002, P.018.
		DC bus is above 741 VDC. If U.018
		≤ 415, DC bus is above 669 VDC.)	Install optional snubber resistor
			braking kit.
			Verify that the AC input is within
			specification. Install an isolation
			transformer if required.
			Check the actual line voltage against
			U.018.
I-Ac	V/Hz identification	V/Hz identification procedure is	Allow identification procedure to
	procedure active	enabled and in progress.	finish.
			Press keypad STOP/RESET to
			cancel identification procedure if
			desired.
I-En	V/Hz identification	H.020 = On; V/Hz identification	Proceed with V/Hz identification
	procedure	procedure has been enabled but not	procedure, start drive and allow
	enabled	started.	procedure to begin. Display will
			change to I-Ac when drive is started.
			Change H.020 to OFF to cancel
			identification and clear I-En if
			desired.
LIL	Low AC input line	AC input line is low.	Adjust line voltage parameter (H.021
		For SVC, indicates DC bus is being	or U.018) to match actual AC line
		regulated. No corrective action is	voltage.
		required.
S-Ac	Vector self-tuning	Vector self-tuning is enabled and in	Allow vector self-tuning procedure to
	active	progress.	finish.
			Press keypad STOP/RESET to
			cancel vector self-tuning procedure
			if desired.
S-En	Vector self-tuning	U.008 = On; vector self-tuning has	Proceed with vector self-tuning, start
	enabled	been enabled but not started.	drive and allow self-tuning
			procedure to begin. Display will
			change to S-Ac when drive is
			started.
			Change U.008 to OFF to cancel
			self-tuning and clear S-En if desired.

Troubleshooting the Drive 6-7