Husqvarna PG820, PG680 Faults and trouble shooting, Fault Code Possible Cause Action

Faults and trouble shooting

Faults and trouble shooting

When either one of the variable speed drives or frequen- cy converters in the machine experience a fault and “trip” out, they will cease to run and an error message will ap- pear flashing on the keypad display (see picture below).

The following list are the most commonly experienced faults and possible action steps.

Fault code

Fault Code	Possible Cause	Action
1—OVERCURRENT	Motor being worked too hard and	Check current being drawn when machine is
	drawing extra current.	running. Reduce speed setting and current draw
		back into acceptable limits as described on
		previous page.
	Short circuit on output side of vari-	Check wiring in plugs connected to motor cables
	able speed drives or frequency con-	or inside connection boxes on motors.
	verters.
	Motor failure (very rare)	Have motor tested and replace if required.
3—EARTH FAULT	Short circuit on output side of vari-	Check wiring in plugs connected to motor cables
	able speed drives or frequency con-	or inside connection boxes on motors.
	verters.
	Motor failure (very rare)	Have motor tested and replace if required.
9—UNDERVOLTAGE	Insufficient voltage supply to ma-	Check power supply and ensure correct voltage.
	chine.
	Power supply to variable speed	Re-connect power to grinder.
	drives or frequency converters has
	been turned off.
11—OUTPUT PHASE	Short circuit on output side of vari-	Check wiring in plugs connected to motor cables
SUPERVISION	able speed drives or frequency con-	or inside connection boxes on motors.
	verters.
	Motor failure (very rare)	Have motor tested and replace if required.
14—UNIT OVER TEM-	Variable speed drives or frequency	Open door on electrical cabinet to increase ven-
PERATURE	converter over temperature due to	tilation.Have variable speed drives or frequency
	high temperature working environ-	converter tested by service agent.
	ment or faulty temperature sensor.
15—MOTOR STALLED	Motor being worked too hard and	Check current being drawn when machine is
	drawing extra current.	running. Reduce speed setting and current draw
		back into acceptable limits as described on
		previous page.
	Mechanical jam preventing motor	Try rotating grinding discs and planetary head by
	from turning.	hand to see if jam exists
16 - MOTOR OVERTEM-	Motor being worked too hard and	Check current being drawn when machine is
PERATURE	drawing extra current.	running. Reduce speed setting and current draw
		back into acceptable limits as described on
		previous page.

16 - English