Honeywell NXL user manual Fault tracing 8996, Fault Possible cause Correcting measures Code

9

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        Fault tracing 89(96)

fault can be reset with the Reset button on the control keypad or via the I/O terminal. The faults are stored in the Fault history menu (H5) which can be browsed. The different fault codes you will find in the table below.

The fault codes, their causes and correcting actions are presented in the table below. The shadowed faults are A faults only. The items written in white on black background present faults for which you can program different responses in the application. See parameter group Protections.

Fault		Fault		Possible cause	Correcting measures
code
1	Overcurrent		Frequency converter has detected too		Check loading.
			high a current (>4*In) in the motor cable:		Check motor size.
			− sudden heavy load increase		Check cables.
			− short circuit in motor cables
			−	unsuitable motor
2	Overvoltage		The DC-link voltage has exceeded the		Make the deceleration time longer.
			limits defined in.
			− too short a deceleration time
			− high overvoltage spikes in utility
3	Earth fault		Current measurement has detected that		Check motor cables and motor.
			the sum of motor phase current is not
			zero.
			− insulation failure in cables or motor
8	System fault			component failure	Reset the fault and restart.
					Should the fault re-occur, contact the
				faulty operation
			-		distributor near to you.
9	Undervoltage		DC-link voltage is under the voltage limits		In case of temporary supply voltage
			defined in.		break reset the fault and restart the
			− most probable cause: too low a		frequency converter. Check the supply
				supply voltage	voltage. If it is adequate, an internal
			−	frequency converter internal fault	failure has occurred.
					Contact the distributor near to you.
11	Output phase		Current measurement has detected that		Check motor cable and motor.
	supervision		there is no current in one motor phase.
13	Frequency		Heatsink temperature is under –10°C
	converter under
	temperature
14	Frequency		Heatsink temperature is over 90°C.		Check the correct amount and flow of
	converter				cooling air.
	overtemperature		Overtemperature warning is issued when		Check the heatsink for dust.
				°	Check the ambient temperature.
			the heatsink temperature exceeds 85 C.		Make sure that the switching frequency
					is not too high in relation to ambient
					temperature and motor load.
15	Motor stalled		Motor stall protection has tripped.		Check motor.
					Check that Pump or Fan is not blocked.
16	Motor		Motor overheating has been detected by		Decrease the motor load.
	overtemperature		frequency converter motor temperature		If no motor overload exists, check the
			model. Motor is overloaded.		temperature model parameters.