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Automower 410iQ, 420iQ and 440iQ: what each manual message means
What Husqvarna's full operator's manual says each fault and information message means on the Automower 410iQ, 420iQ and 440iQ, wire and EPOS installations, and what to do, with the station lamp and the symptoms it lists.
- Models
- Automower 410iQ, 420iQ and 440iQ (wire and EPOS, full manual)
- Last updated
- 25 Oct 2026
Automower 410iQ, 420iQ and 440iQ (wire and EPOS, full manual)Details
- Models
- Automower 410iQ, 420iQ and 440iQ (wire and EPOS, full manual)
- Last updated
- 25 Oct 2026
On this page
- 410iQ, 420iQ and 440iQ: what stops the mower
- 410iQ, 420iQ and 440iQ: GPS and wire-support messages
- 410iQ, 420iQ and 440iQ: battery and charging
- 410iQ, 420iQ and 440iQ: lift, tilt, alarms and the rest
- 410iQ, 420iQ and 440iQ: the station lamp
- 410iQ, 420iQ and 440iQ: symptoms with no message
- What the tables do not tell you
- Nothing here matches your symptom?
- If your code isn't here
- Sources
Husqvarna names its messages; it does not number them. Each shows what Automower Connect or Automower Access shows: a name such as "Trapped" or "No loop signal", then the cause and the action. It may show the name in your own language; we give the manual's English. This edition is the US one and prints a US Customer Care number in many actions; we leave it out, and where it appears the manual's own step before it is the one given here.
410iQ, 420iQ and 440iQ: what stops the mower
From section 8.1, Messages, pages 47 to 49 and 52 to 53 of the manual. The manual says these messages are shown in Automower Connect and Automower Access, and to speak to your Husqvarna representative if the same message shows frequently1. It covers both boundary-wire and EPOS (wire-free) installations; the rows for the loop signal and the boundary are marked as for wire installations only.
| Message | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| No loop signal (wire installations only) | Seven causes: no power in the charging station, and its LED is not on; the boundary wire is damaged or not installed correctly; ECO mode is on and the loop signal is disabled because the product was started in the work area; the boundary wire is crossed on its way to and from an island; the product does not find the loop signal from the station; disturbances from metal objects (fences, reinforcement steel) or buried cables close by; the product is too far from the boundary wire | Check the station's power supply and low-voltage cable, the power outlet and the residual-current device; check the boundary wire is connected to the station, check all splices and repair a break; put the product in the station, start it by hand, push STOP before you remove it from the station; lay the wire correctly round the island; put the product in the station and make a new loop signal; move the boundary wire or make more islands to increase the signal strength; redo the installation so every part of the work area is at most 35 m (115 ft) from the boundary wire1 |
| Outside work area (wire installations only) | Six causes: the wire connections at the station are crossed; the wire is too close to the edge of the work area; the work area is too steep by the boundary wire; the wire around an island is not installed correctly; disturbances from metal objects or buried cables close by; the product cannot find the correct loop signal because of interference from a different installation nearby | Check the wire is connected correctly; put the wire down correctly; move the wire or make more islands; put the product in the station and make a new loop signal1 |
| Trapped | The product is blocked in a small area behind a number of obstacles | Examine whether there are obstacles that make it hard for the product to move away from this location1 |
| Slipped | The product slips because there is an obstacle; because of wet grass; because it has hit an obstacle and stopped, or the wheels cannot move on the wet grass; because the slope is too steep; because the slope is too steep when it follows the guide wire | Remove the obstacle; wait until the lawn is dry before you start the product again; free the product and rectify the reason for the lack of drive, and if it is wet grass wait until the lawn is dry before using it; isolate the steep slope with boundary wire; install the guide wire diagonally in the slope1 |
| Slope too steep | The product stopped because the slope is too steep | Change the installation of the boundary wire to exclude this steep part of the work area1 |
| Collision | The body of the product cannot move freely around its chassis | Make sure the body can move freely around the chassis, that it is correctly installed, and that no dirt or unwanted material blocks it; if the problem continues, contact your authorized service center1 |
| Wheel motor blocked, left, rear left, right or rear right; Wheel motor overloaded, left or right; Wheel drive problem, right or left | The drive wheel is blocked by grass or other objects | Examine the drive wheel and remove the grass or other objects; for the wheel drive problem, examine the right drive wheel and remove the grass or objects, and if the problem continues speak to your authorized service center1 |
| Cutting system blocked | The cutting system is blocked by grass or other objects | Examine the cutting system and remove the grass or other objects; use protective gloves when you examine the cutting system1 |
| Cutting system major imbalance; Cutting system imbalance | There are vibrations in the blade disc; the product has discovered vibrations in the blade disc | Make sure the blades and screws are not damaged or worn and that all blades are correctly installed with only one blade attached in each position; clean the blades and the cutting disc. The manual warns that continued operation can damage the cutting system1 |
| Unexpected cutting height adj (the manual cuts the name off); Limited cutting height range; Cutting height problem | The cutting height adjustment cannot move | Examine the cutting height adjustment and remove grass or other objects; if the problem continues, contact your authorized service center1 |
| Cutting height blocked | Grass or other objects are wound around the cutting height adjustment, or between the blade disc and the chassis | Examine the blade disc and the bellows around the cutting height adjustment, and remove any grass or other objects that may have got stuck1 |
| Destination not reachable | There is no guide wire, transport path or boundary wire in the work area, so the product cannot go to the destination; a stay-out zone blocks the way | Edit or make a new installation of the work area in the app and include a guide wire or a boundary wire in the work area; edit or remove the stay-out zone or make a new installation of the work area1 |
| Destination blocked | An obstacle stops the product going to the destination | Remove the obstacle1 |
| Guide 1, 2 or 3 not found | The guide wire you have installed before is not found | Examine whether the guide wire is correctly connected to the charging station or to the boundary wire, and whether there is a break in the guide wire1 |
| Map problem | The map object file is incorrect | Check the map in the app, adjust it and save it; or delete the map and do a new installation1 |
| Invalid firmware configuration | The firmware in the product is not updated | Use the Automower Connect app to make sure the mower has the latest firmware; if the problem continues, speak to your authorized service center1 |
410iQ, 420iQ and 440iQ: GPS and wire-support messages
Pages 51 to 53 of the manual1. Unlike the 435 iQ AWD and the 540 to 580 EPOS manuals, this one has no Searching for satellites, Reference station or No correction data rows.
| Message | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| GPS navigation problem | A problem with the GPS-assisted equipment | Restart the product; if the problem continues, contact your authorized service center1 |
| Weak GPS signal | The GPS signal is blocked in large parts of the work area | Remove objects that can cause a blockage of the GPS signal if possible; disable the GPS navigation function and use the lawn coverage function instead1 |
| EPOS plug-in not found | The EPOS plug-in has been installed earlier, but cannot be found | Restart the product; if the problem continues, contact your authorized service center1 |
| Boundary wire problem | The boundary wire for the Support by wire function is damaged or not installed correctly | Examine that the boundary wire is connected correctly to the charging station and examine all the splices; examine the wire if it is damaged and repair it if necessary; if the problem continues, contact your local dealer1 |
410iQ, 420iQ and 440iQ: battery and charging
Pages 50 to 52 of the manual1.
| Message | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| Empty battery | The product cannot find the charging station; the battery is at the end of its life cycle; the product cannot enter the station because the antenna in the baseplate of the station is damaged; the product is in the station but does not charge | Change the position of the guide wire and check the installation settings for finding the station; speak to your authorized Automower service center to replace the battery; if the indicator lamp on the station flashes red, the antenna is damaged, so speak to your authorized service center; make sure the charging plates on the product and the contact plates on the station are in contact, and clean them1 |
| Battery problem | A temporary battery or firmware problem in the product; the wrong type of battery | Restart the product, and if the problem continues speak to your authorized service center; use only original OEM batteries1 |
| Battery needs replacement | The battery's state of health is low | Replace the battery; speak to your authorized service center1 |
| Battery near end of life | The battery's state of health is critically low | Replace the battery; speak to your authorized service center1 |
| Temporary battery problem | A temporary electronic or firmware problem in the product | Restart the product; if the problem continues, speak to your authorized service center. The manual prints this against twelve names in one block (see the last table)1 |
| Temperature restriction | The product does not operate if the battery temperature is too high or too low | The product starts to operate again when the temperature is between the set limits and the schedule lets it operate; make sure the station is in a place protected from the sun1 |
| Charging current too high | The battery charges with too high a current; the power supply unit is incorrect or damaged | Make sure the power supply unit and charging station are not damaged; make sure you use the correct power supply unit and charging station; restart the product; if the problem continues, contact your local dealer1 |
| Charging system problem | Corrosion or dirt on the charging plates and contact plates; a temporary electronic or firmware problem | Restart the product and clean the charging plates on the product and the contact plates on the station; restart, and if the problem stays speak to your authorized service center1 |
| No power in charging station | The power supply unit is incorrect or damaged; a power failure; there is no contact between the contact plates and the charging plates | Examine the power supply unit and replace it if necessary; find and correct the cause of the power failure; make sure the charging plates and contact plates are in contact, and clean them1 |
| Charging station blocked | The product cannot go into the station because it is blocked, or the baseplate of the station is tilted or bent | Examine why the product cannot go into the station; remove any objects and make sure the baseplate is level1 |
| Stuck in charging station | The product cannot leave the station because it is blocked, or it slips on the baseplate of the station | Examine why the product cannot leave the station; remove any objects and clean the baseplate1 |
| Charging station communication problem | The mower cannot communicate with the charging station; a power failure | Create a new loop signal or reinstall the charging station under map view in the app, and if the problem continues speak to your authorized service center; find and correct the cause of the power failure1 |
| Accessory power problem | There is a power problem with the accessory port | Set the product to OFF and disconnect and reconnect the accessory to the accessory port; set the product to ON; if the problem continues speak to your authorized service center1 |
410iQ, 420iQ and 440iQ: lift, tilt, alarms and the rest
Pages 47 to 50 of the manual1.
| Message | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| Upside down | The product is leaning too much or has turned over | Turn the product the right way up1 |
| Mower tilted | The product tilts too much | Move the product to a level area1 |
| Lifted | The lift sensor has been enabled because the product has been lifted | Make sure the body can move freely around the chassis; remove or make an island around objects that can cause the body to be lifted; if the problem continues, contact your authorized service center1 |
| Alarm! Mower stopped; Alarm! Mower was moved; Alarm! Outside GeoFence | The alarm was started because the product was stopped, lifted, tilted, moved, or was outside the GeoFence | Enter the PIN code to disable the alarm; the alarm settings can be changed in the Security menu1 |
| Wrong PIN code | An incorrect PIN code has been entered; 5 tries are permitted, then the product is blocked for a period | Enter the correct PIN code; speak to your local Husqvarna representative if you forgot the PIN code; if you made a pairing between the product and the app, you can recover the PIN code in the app1 |
| Temporary problem | A temporary electronic or firmware problem in the product | Update the firmware via FOTA; restart the product; if the problem continues, speak to your authorized service center1 |
| Electronic problem; Loop sensor problem; Tilt sensor problem; Invalid sub-device combination; STOP button problem; Connectivity problem; Safety function faulty; Invalid system configuration; Lift sensor problem; Collision sensor problem; Radar problem; Temporary battery problem | The manual prints one cause and one action against all twelve: a temporary electronic or firmware problem in the product | Restart the product; if the problem continues, speak to your authorized service center1 |
Two observations on the wording as printed, not corrections. The last Slipped row, for a slope that is too steep when the product follows the guide wire, tells the owner to "make sure that the slope is too steep for the product", and points to the technical data on page 62; the row before it says to check whether the slope is too steep. The manual prints Radar problem inside the block of restart-only messages, with no cause or action of its own for the radar.
410iQ, 420iQ and 440iQ: the station lamp
Section 8.2, page 53. The manual says the lamp is green when the installation is correct1.
| Lamp | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| Constant green | The signals of the charging station are good | No action is necessary |
| Flashes green | The signals of the station are good and ECO mode is enabled | No action is necessary |
| Flashes blue | For an EPOS installation: the product is not connected to the station with Bluetooth. For a boundary wire installation: the boundary wire is not connected to the station; or the boundary wire is damaged | Make a pairing between the product and the station in the Automower Connect app; connect the boundary wire to the station; replace the damaged section of the boundary wire with new boundary wire |
| Flashes red | The top of the charging station is not installed correctly | Make sure the wires of the charging station top are connected, and if the problem stays speak to your local Husqvarna representative |
| Constant red | An error in the circuit board or an incorrect power supply in the station | The error must be corrected by an authorized service technician; speak to your local Husqvarna representative |
410iQ, 420iQ and 440iQ: symptoms with no message
Section 8.3, pages 54 and 55, lists problems the product shows without a message1.
| Symptom | Cause, per the manual | What Husqvarna says to do |
|---|---|---|
| The product has difficulty docking | The guide wire is not put straight in a line and the correct distance from the station; the guide wire is not put in the slot in the station plate; the station is not on a level surface | Check the installation of the station; put the guide wire straight and in the slot of the station plate; put the station on a level surface1 |
| The product operates at the wrong time | The time or the date in the product is not correct; the start and stop times for operating are incorrect | Set the time or date; change the schedule settings1 |
| The product vibrates | The cutting system is out of balance because of damaged blades; too many blades in the same position; blades of different thickness | Examine the blades and screws and replace them if necessary; check that only one blade is attached to each screw; check whether the blades are of different thickness and replace them if necessary1 |
| The product operates, but the blade disc does not rotate | The product searches for the charging station, or is moving to the starting point | Usual operation: the blade disc does not rotate while the product searches for the station1 |
| The product operates for shorter periods than usual between charges | Grass or another object causes a blockage to the blade disc; the battery is at the end of its life cycle; blunt blades, so more energy is needed when cutting the grass | Remove and clean the blade disc; replace the battery; replace the blades1 |
| Mowing and charging times are shorter than usual | The battery is at the end of its life cycle | Replace the battery1 |
| The product is parked for hours in the charging station | The product has operated for the maximum cutting time for the day; the hatch is closed but the jog wheel is not pushed; Parking mode is enabled; the battery temperature is too high or too low to operate | Nothing to do about the cutting time, see the schedule; push STOP to open the hatch, enter the PIN code and confirm with OK, push the jog wheel and close the hatch; change the operating mode; make sure the station is in a place protected from the sun1 |
| Uneven mowing results | The product operates for a small number of hours per day; the shape of the work area needs the Lawn coverage settings adjusted; the work area is too large; blunt blades; long grass for the set cutting height; grass collects at the blade disc or around the motor shaft | Increase the cutting time; change the settings of the areas where the product starts to cut and how often; decrease the size of the work area or extend the schedule; replace all the blades; increase the cutting height and then lower it when the grass is shorter; remove the collection of grass and clean the product1 |
| The battery is empty, the product is in the station, but it does not charge and cannot be set to ON | If the battery is deeply discharged, it takes a long time to charge it before the product can be set to ON | Keep the product in the station for 24 hours and test whether it can be set to ON; if the problem continues, speak to your authorized service technician1 |
What the tables do not tell you
They say what Husqvarna tells owners to do. They say nothing about how often a message appears or whether the action works. The owner-report pages in the fault and error message reference are for that. A message name that is not on this page may still be in your manual.
Nothing here matches your symptom?
A fault that isn't listed here doesn't mean nothing is wrong with your mower. The manufacturer's own manual is linked from this page, and the guides for this brand are listed on its overview.
Found something we don't cover yet? Send us the details — that's how the next owner finds it documented.
If your code isn't here
-
Find the message Automower Connect or Automower Access shows in the tables on this page. Read the manual's cause and action for it. Many messages list more than one cause: read them all before you act.
More about this step
Applies when: the app or the mower shows a message.
Worked if: you have Husqvarna's own action for that message, not a forum guess at what it means.
Didn't work? Next: step 2 — Look at the lamp on the charging station. It should show solid...
Method: the fault and information message tables in Husqvarna's 410iQ, 420iQ and 440iQ operator's manual, read row by row for this page
-
Look at the lamp on the charging station. It should show solid or flashing green. A flashing blue lamp means, for a wire installation, that the boundary wire is not connected to the station or is damaged, and for an EPOS installation that the product is not connected to the station by Bluetooth; a flashing red lamp, that the top of the station is not installed correctly; a solid red lamp, an error in the circuit board or the power supply.
More about this step
Applies when: the message is about the loop signal, the charging station or leaving or finding it, or the mower stops with no message you can match.
Worked if: you know whether the problem is the station and its wire rather than the mower.
Didn't work? Next: step 3 — Open the owner-report page for your message. Find it from the...
Method: the charging-station lamp table in the manual
-
Open the owner-report page for your message. Find it from the table on the fault and error message reference, to see what other owners found and how many of them found it.
More about this step
Applies when: the manual's action did not fix it, or your message is in that table.
Worked if: you have what owners actually did about it, beside what the manual says.
Didn't work? Next: step 4 — Speak to your Husqvarna representative or approved servicing...
Method: the owner-report pages named in that table; what they hold is stated on each
-
Speak to your Husqvarna representative or approved servicing dealer. Do this if the same message keeps coming back, as the manual says.
Stop and get help if
the station lamp is solid red: the manual says an authorised service technician must correct that, so leave the station alone.
More about this step
Applies when: the message comes back after you have followed the manual's action.
Worked if: someone with the diagnostic tool reads the mower, or you know the dealer's terms.
Method: the manual's own wording on repeated messages
Sources
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