Carrier 19XRV Vfd, Code, Fault Type Description Corrective Action On VFD, Hist Screen None

Table 6 — Powerflex 755 Fault Code Descriptions and Corrective Actions

VFD
FAULT	ICVC
CODE
	FAULT	FAULT TYPE	DESCRIPTION	CORRECTIVE ACTION
ON VFD
	STATE
HIST
SCREEN
NONE	206		Processor memory fault	Consult VFD manual to resolve generic fault.
0		No Entry
				Check Compressor Discharge High Pressure
				switch wiring and accuracy.
2	207	Auxiliary Input	Input is open.	Check for high condenser water temperatures,
				low water flow, fouled tubes.
				Check for division plate/gasket bypass. Check for
				noncondensables in refrigerant.
3	210	Power Loss	Line voltage dropout	Temporary loss of voltage. Disable Single Cycle
				Dropout in VFD_CONF sceen.
4				Verify phase-to-phase and phase-to-ground line
	215	Undervoltage	Low DC bus voltage	voltage. VFD Circuit Board malfunction.
				Call Carrier Service.
5				Verify phase to phase and phase to ground line
	166	Overvoltage	High DC bus voltage	voltage. Monitor AC line for high transient voltage
				conditions.
				Any phase current > 106% RLA. Can result from
				significant load side current imbalance when
7				running at full load.
	217	Motor Overload	An internal electronic overload trip has occurred.	Check entering condenser water temperature
				and water flow rate.
				Check Motor Rated Load Amps in VFD_CONF
				screen.
				Check that VFD refrigerant isolation valves are
				open.
8	219	Heat Sink Over-	Heat sink temperature has exceeded the maxi-	Check VFD refrigerant cooling orifice and refrig-
		temp	mum operating temperature	erant strainer.
				Check for proper VFD cooling fan operation and
				air flow blockage.
				Check that VFD refrigerant isolation valves are
				open.
9	219	Transistor Over-	The output transistors have exceeded the maxi-	Check VFD refrigerant cooling orifice and refrig-
		temp	mum operating temperature	erant strainer.
				Check for proper VFD cooling fan operation and
				air flow blockage.
12			The drive output current has exceeded the hard-	Check for high entering water temperature or low
	286	HW Overcurrent		condenser water flow. Check current settings in
			ware current limit.
				VFD_CONF screen.
13			A current path to earth ground greater than 25%	Check the motor, motor terminals, and external
	220	Ground Fault		wiring to the drive output terminals for a
			of drive rating has occurred.
				grounded condition.
14	206	Ground Warning	The ground current has exceeded the level set in	—
			P467
				To reset the processor, cycle power to chiller,
15	206	Load Loss	If this fault appears, there may be a problem with	check ICVC VFD_CONF settings and save set-
			software configuration.	tings when exiting VFD_CONF screen.
				Check VFD parameters with Drive Explorer.
17		The DC bus ripple		Check phase-to-phase and phase-to-ground dis-
	216	has exceeded a	Line Voltage imbalance	tribution bus voltage. Increase Line Voltage %
		preset level.		Imbalance in VFD_CONF screen.
20	206	TorqPrv Spd Band	See VFD Fault Code 15	See VFD Fault Code 15
21	225	Output PhaseLoss	The current in one or more phases has been lost	Check Motor Current % Imbalance in
			or remains below a preset level.	VFD_CONF screen.
				Verify input voltage is within drive specified limits.
			The drive is not following a commanded decelera-	Verify system ground impedance follows proper
24	204	Decel Inhibit		grounding techniques.
			tion because it is attempting to limit the bus volt-	Disable bus regulation P186 and/or add dynamic
			age.
				brake resistor and/or extend deceleration time
				P537 and P538.
33	206	AuRsts Exhausted	See VFD Fault Code 15	See VFD Fault Code 15
36	286	SW Overcurrent	The drive output current has exceeded the 1 ms	Check for excess load, improper DC boost set-
			current rating.	ting, DC brake volts set too high.

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