Husqvarna sets this out as a table with the columns “Message”, “Cause”, “Action”. We print the lines in the maker’s order.

• Wheel motor blocked, left/right
• Grass or other object has wrapped around the drive wheel.
• Check the drive wheel and remove the grass or other object.
• Cutting system blocked
• Grass or other object has wrapped around the blade disc.
• Check the drive wheel and remove the grass or other object.
• The blade disc lies in a pool of water.
• Move the product and prevent the collection of water in the work area.
• Trapped
• The product has got caught in something.
• Free the product and rectify the reason for it becoming trapped.
• The product is stuck behind a number of obstacles.
• Check if there are any obstacles which make it hard for the product to move on from this location.
• Outside working area
• The boundary wire connections to the charging station are crossed.
• Check that the boundary wire is connected correctly.
• The boundary wire is too close to the edge of the work area.
• Check that the boundary wire has been laid according to the instructions. Refer to To install the boundary wire on page 19.
• The work area slopes too much by the boundary loop.
• The boundary wire is laid in the wrong direction around an island.
• Disturbances from metal objects (fences, reinforcement steel) or buried cables close by.
• Try moving the boundary wire.
• The product finds it hard to distinguish the signal from another product installation close by.
• Place the product in the charging station and generate a new loop signal.
• 34 - Troubleshooting
• Empty battery
• The product cannot find the charging station.
• Check that the charging station and the guide wire are installed in accordance with the instructions. Refer to To install the guide wire on page 19.
• The guide wire is broken or not connected.
• Find out where the break is and rectify it.
• The battery is spent.
• Replace the battery. Refer to Battery on page 32.
• The charging station’s antenna is defective.
• Check if the indicator lamp in the charging station flashes red. Refer to Indicator lamp in the charging station on page 39.
• Wrong PIN code
• Wrong PIN code has been entered.
• Five attempts are permitted, and the keypad is then blocked for five minutes.
• Enter the correct PIN code. Contact
• Husqvarna customer service if you forget the PIN code.
• No drive
• The product has got caught in something.
• Free the product and rectify the reason for the lack of drive. If it is due to wet grass, wait until the lawn has dried before using the product.
• The work area includes a steep slope.
• Steep slopes should be isolated. Refer to To examine where to put the guide wire on page 18.
• The guide wire is not laid at an angle on a slope.
• If the guide wire is laid on a slope, it must be laid at an angle across the slope. Refer to To examine where to put the guide wire on page 18.
• Wheel motor overloaded, right/left
• The product has got caught in something.
• Free the product and rectify the reason for the lack of drive. If it is due to wet grass, wait until the lawn has dried before using the product.
• Charging station blocked
• The contact between the charging strips and contact strips may be poor and the product has made a number of attempts to charge.
• Put the product in the charging station and check that the charging strips and contact strips make good contact.
• An object is obstructing the product.
• Remove the object.
• The charging station is tilted or bent.
• Confirm that the charging station is placed on a fully flat and horizontal ground. The charging station must not be tilted or bent.
• Stuck in charging station
• There is an object in the way of the product preventing it from leaving the charging station.
• Remove the object.
• Troubleshooting - 35 Upside down
• The product is leaning too much or has turned over.
• Turn the product the right way up.
• Needs manual charging
• The product is set to the Secondary area operating mode.
• Place the product in the charging station. This behavior is normal and no action is required.
• Next start hh:mm
• The timer setting prevents the product from operating.
• Change the timer settings. Refer to To do the schedule settings on page 21.
• The rest period is in progress. The product has an inbuilt standby period according to the Standby time table.
• This behavior is normal and no action is required.
• The clock on the product is not correct.
• Set the time. Refer to To set the time & date on page 25.
• Today's mowing completed
• The rest period is in progress. The product has an inbuilt standby period according to the Standby time table.
• This behavior is normal and no action is required.
• Lifted
• The lift sensor has been activated as the product has become trapped.
• Free the product.
• Wheel drive problem, right/left
• Grass or other object is wrapped around the drive wheel.
• Clean the wheels and around the wheels.
• Safety function faulty
• Temporary electronic or firmware related issue in the product.
• Restart the product.
• If the problem remains, the message requires action by authorized service technician.
• Electronic problem
• Loop sensor problem, front/rear
• Charging system problem
• Tilt sensor problem
• Temporary problem
• Temporary battery problem
• Temporary battery or firmware related issue in the product.
• Restart the product.
• Disconnect and reconnect the battery.
• If the problem remains, the message requires action by authorized service technician.
• Battery problem
• Charging current too high
• Wrong or faulty power supply unit.
• Restart the product.
• If the problem remains, the message requires action by authorized service technician.
• 36 - Troubleshooting
• No loop signal
• The power supply is not connected.
• Check the wall socket connection and whether an earth-fault breaker has tripped or not. Check that the low voltage cable is connected to the charging station.
• The low voltage cable is damaged or not connected.
• Check that the low voltage cable is not damaged. Check that it is also properly connected to the charging station and to the power supply.
• The boundary wire is not connected to the charging station.
• Check that the boundary wire connectors are fitted properly to the charging station. Replace connectors if damaged. Refer to To install the boundary wire on page 19.
• Boundary wire broken.
• Find out where the break is. Replace the damaged section of the loop with a new loop wire and splice using an original coupler. Refer to Find breaks in the loop wire on page 41.
• ECO mode is activated and the product has attempted to start outside the charging station.
• Place the product in the charging station and press the STOP button. Refer to ECO mode on page 25.
• The boundary wire is crossed on its way to and from an island.
• Check that the boundary wire is laid according to instructions, e.g. in the right direction around the island. Refer to To install the boundary wire on page 19.
• The connection between the product and the charging station has been broken.
• Place the product in the charging station and generate a new loop signal.
• Disturbances from metal objects (fences, reinforcement steel) or buried cables close by.
• Try moving the boundary wire.
• Troubleshooting - 37 6.3 Information messages
• Below a number of information messages are listed which may be shown in the display of the product.
• Contact Husqvarna customer service if the same message appears often.
• Low battery
• The product cannot find the charging station.
• Check that the charging station and the guide wire are installed in accordance with the instructions. Refer to To install the guide wire on page 19.
• The guide wire is broken or not connected.
• Find out where the break is and rectify it.
• The battery is spent.
• Replace the battery. Refer to Battery on page 32.
• The charging station’s antenna is defective.
• Check if the indicator lamp in the charging station flashes red. Refer to Indicator lamp in the charging station on page 39.
• Settings restored
• Confirmation that a Reset all user settings has been carried out.
• This is normal. No action required.
• Guide not found
• The guide wire is not connected to the charging station.
• Check that the guide wire connector is tightly connected to the charging station. Refer to To install the guide wire on page 19.
• Break in the guide wire.
• Find out where the break is. Replace the damaged section of the guide wire with a new loop wire and splice using an original coupler.
• The guide wire is not connected to the boundary loop.
• Check that the guide wire is connected correctly to the boundary loop. Refer to To install the guide wire on page 19.
• Guide calibration failed
• The product has failed to calibrate the guide wire.
• Check that the guide wire is installed according to the instructions. Refer to To install the guide wire on page 19. Also, check that the minimum distance to the left of the guide wire is met. Refer to To examine where to put the guide wire on page 18.
• Guide calibration accomplished
• The product has succeeded to calibrate the guide wire.
• No action required.
• 38 - Troubleshooting 6.4 Indicator lamp in the charging station
• For a fully functional installation, the indicator lamp in the charging station must emit a solid or flashing green light. If something else appears, follow the troubleshooting guide below.
• There is more help on www.husqvarna.com. If you still need help, please contact Husqvarna customer service.
• Light
• Cause
• Action
• Solid green light
• Good signals
• No action required
• Green flashing light
• The signals are good and ECO mode is activated.
• No action required. For more information on ECO mode. Refer to ECO mode on page 25.
• Blue flashing light
• The boundary loop is not connected to the charging station.
• Check that the boundary wire connectors are fitted properly to the charging station. Refer to To install the guide wire on page 19.
• Break in the boundary loop.
• Find out where the break is. Replace the damaged section of the loop with a new loop wire and splice using an original coupler.
• Yellow flashing light
• The guide wire is not connected to the charging station.
• Check that the guide wire connector is properly connected to the charging station. Refer to To install the guide wire on page 19 Break in the guide wire.
• Find out where the break is. Replace the damaged section of the guide wire with a new loop wire and splice using an original coupler.
• Red flashing light
• Interruption in the charging station’s antenna.
• Contact Husqvarna customer service.
• Solid red light
• Fault in the circuit board or incorrect power supply in the charging station.
• The fault should be rectified by an authorized service technician.
• Contact Husqvarna customer service.
• Troubleshooting - 39 6.5 Symptoms
• If your product does not work as expected, follow the symptoms guide below.
• There is a FAQ (Frequently Asked Questions) on www.husqvarna.com which provides more detailed answers to a number of standard questions. Contact Husqvarna customer service if you still cannot find the reason for the fault.
• Symptoms
• Cause
• Action
• The product has difficulty docking.
• The guide wire is not laid in a long straight line that is far enough out from the charging station.
• Check that the charging station has been installed according to the instructions in To install the charging station on page 19 The guide wire is not inserted in the slot under the charging station.
• It is absolutely critical for operation that the guide wire is perfectly straight and is in the correct position under the charging station. Therefore make sure that the guide wire is always in its slot in the charging station. Refer to To install the guide wire on page 19.
• The charging station is on a slope.
• Place the charging station on a surface that is entirely level. Refer to To examine where to put the charging station on page 14.
• The product runs at the wrong time
• The product clock needs to be set.
• Set the clock. Refer to To set the time
• & date on page 25.
• The start and stop times for mowing are incorrect.
• Reset the start time and stop time settings for mowing. Refer to To reset the schedule setting on page 22.
• The product vibrates.
• Damaged blades lead to imbalance in the cutting system.
• Inspect the blades and screws and replace them if necessary. Refer to To replace the blades on page 31.
• Too many blades in the same position lead to imbalance in the cutting system.
• Check that only one blade is fitted at each screw.
• Different versions (thickness) of Husqvarna blades are used.
• Check if the blades are of different versions.
• The product runs, but the blade disc does not rotate.
• The product searches for the charging station, or is driving to the starting point.
• No action. The blade disc does not rotate when the product is searching for the charging station.
• The product mows for shorter periods than usual between charges.
• Grass or other foreign object blocks the blade disc.
• Remove and clean the blade disc. Refer to Clean the product on page 30.
• The battery is spent.
• Replace the battery. Refer to Battery on page 32.
• 40 - Troubleshooting
• Symptoms
• Cause
• Action
• Both the mowing and charging times are shorter than usual.
• The battery is spent.
• Replace the battery. Refer to Battery on page 32.
• The product is parked for hours in the charging station.
• The product has an inbuilt standby period according to the Standby time table.
• Refer to To set the schedule on page 22.
• No action.
• The STOP button has been activated.
• Open the hatch, enter the PIN code and confirm with the OK button. Press the Start button and then close the hatch.
• Uneven mowing results.
• The product works too few hours per day.
• Increase the mowing time. Refer to To calculate the schedule setting on page 22.
• The shape of the work area requires the use of Area 1-3 for the product to find its way to all remote areas.
• Steer the product to a remote area. Refer to To set the Lawn Coverage function on page 23.
• The How often? setting is incorrect in relation to the layout of the work area.
• Check that the correct How often? value is selected.
• Work area too large.
• Try limiting the work area or extending the work time. Refer to To set the schedule on page 22.
• Dull blades.
• Replace all the blades. Refer to To replace the blades on page 31.
• Long grass in relation to the set cutting height.
• Increase the cutting height and then successively lower it.
• Accumulation of grass by the blade disc or around the motor shaft.
• Check that the blade disc rotates freely and easily. If not, screw off the blade disc and remove grass and foreign objects. Refer to Clean the product on page 30.
• 6.6 Find breaks in the loop wire
• Breaks in the loop wire are usually the result of unintentional physical damage to the wire such as when gardening with a shovel. In countries with ground frost, also sharp stones that move in the ground can damage the wire. Breaks can also occur due to the wire being stretched
• excessively during installation.
• Mowing the grass too low right after the installation can damage wire insulation. Damage to the insulation may not cause disruptions until several weeks or months later. To avoid this, always select the maximum cutting height the first weeks after installation and then lower the
• height one step at a time every second week until the desired cutting height has been reached.
• A defective splicing of the loop wire can also lead to disruptions several weeks after the splice was done. A faulty splice can, for example, be the result of the original coupler not being pressed together hard enough with a pair of pliers, or that a coupler of lower quality than the original
• coupler has been used. Please first check all known splices before further troubleshooting is done.
• Troubleshooting - 41 A wire break can be located by gradually halving the distance of the loop where the break may have occurred until there is only a very short section of the wire left.
• The following method does not work if ECO mode is activated. Make sure first that ECO mode is turned off. Refer to ECO mode on page 25.
• 1.
• Check that the indicator lamp in the charging station flashes blue, which indicates a break in the boundary loop. Refer to Indicator lamp in the charging station on page 39.
• 2.
• Check that the boundary wire connections to the charging station are properly connected and not damaged. Check that the indicator lamp in the charging station is still flashing blue.
• R
• GUIDE
• L
• POWER 3.
• Switch the connections between the guide wire and the boundary wire in the charging station.
• Start by switching connection L and GUIDE.
• If the indicator lamp is lit with a solid green light, then the break is somewhere on the boundary wire between L and the point where the guide wire is connected to the boundary wire (thick black line in the illustration).
• GUIDE
• L
• Guide
• To rectify the fault you will need boundary wire, connector(s) and coupler(s):
• a) If the suspected boundary wire is short then it is easiest to exchange all of the boundary wire between L and the point where the guide wire is connected to the boundary wire (thick black line).
• b) If the suspected boundary wire is long
• (thick black line) then do as follows: Put L and GUIDE back to their original positions.
• Then disconnect R. Connect a new loop wire to R. Connect the other end of this new loop wire at the middle of the suspected wire section.
• 42 - Troubleshooting
• R
• If the indicator lamp now is green, then the break is somewhere in the wire between the disconnected end to the point where the new wire is connected (thick black line below). In that case, move the connection for the new wire closer to the disconnected end (roughly at the middle of the suspected
• wire section) and check again if the indicator lamp is green.
• Continue until only a very short section of the wire remains which is the difference between a solid green light and a flashing blue light. Then follow instruction in step 5 below.
• 4.
• If indicator lamp still flashes blue in step 3 above: Put L and GUIDE back in their original positions. Then switch R and
• GUIDE. If indicator lamp now is lit with a solid green light then disconnect L and connect a new boundary wire to L. Connect the other end of this new wire at the middle of the suspected wire section. Follow the same approach as in 3a) and 3b) above.
• 5.
• When the break is found, the damaged section must be replaced with a new wire.
• Always use original couplers.
• Troubleshooting - 43 7 Transportation, storage and disposal