Indication | Alliance Laundry Systems 9001889R7 guide

Inverter Drive Error Codes

Operation	Name	Description and NOTES	Check point		Corrective action
Panel	Name	Description and NOTES	Check point		Corrective action
Indication
	Inverter	If a current of more than 150% of the rated	Verify that the AC		Contact Alliance
	overload shut-	output current flows and overcurrent shut-	drive’s parameters are		Laundry Systems’
	off (electronic	off does not occur (200% or less) inverse-	correct.		Customer Service
	overcurrent	time characteristics cause the electronic			department.
	protection)	overcurrent protection to be activated to
		stop the inverter output in order to protect
		the output transistors.
		Note: Resetting the inverter initializes
		the internal heat integrating data of the
		electronic overcurrent protection.

	Fin overheat	If the cooling fin overheats, the overheat	∙	Check for too	Verify that the AC
		sensor is actuated to stop the inverter	high ambient		drive’s parameters are
		output.	temperature.		correct.
			∙	Check for	Contact Alliance
			cooling fin clogging		Laundry Systems’
					Customer Service
					department.

	Brake transistor	Internal Circuit Error			Contact Alliance
	alarm detection				Laundry Systems’
					Customer Service
					department.

	Output side	This function stops the inverter output if a	Check the motor cable		Repair the wiring.
	ground fault	ground fault overcurrent flows due to a	insulation and
	overcurrent	ground fault which occurred in the	connection for output
	protection	inverter’s output (load) side. Use Pr. 249	short-circuit/ground
		“ground fault detection at start” to set	fault.
		whether the protective function is to be
		activated or not. (In the 400V class, the
		protective function is always active.)

	External thermal	If the external thermal relay designed for	Check for motor		Load the machine
	relay operation	motor overheat protection or the internally	overheating.		properly to distribute
		mounted temperature relay in the motor	Check to make sure		the load evenly.
		switches on (contacts open), the inverter	the machine is loaded
		output is stopped. If the relay contacts are	properly and that the
		reset automatically, the inverter will not	load is balanced.
		restart unless it is reset.

	Stall prevention	The running frequency has fallen to 0 with	Check the motor for a		Verify that the AC
		stall prevention activated.	“locked rotor”		drive’s parameters are
			condition.		correct.
					Contact Alliance
					Laundry Systems’
					Customer Service
					department.

	Output phase	This function stops the inverter output if	Check the wiring.		Tighten the wire
	failure	one of the three phases (U, V, W) on the	Check the motor for a		connections.
	protection	inverter’s output side (load side) results in	fault.		Replace the
		open phase.			connectors as needed.

	Fan fault	For the inverter which contains a cooling	Check the cooling		Replace the fan as
		fan, FN appears on the operation panel	fan’s operation.		needed.
		when the cooling fan fails.