How to replace the lift sensor on the Husqvarna Automower 220AC
Here is a step by step guide of how to disassemble and replace the lift sensor on the Husqvarna Automower 220AC. The same steps apply for the 230ACX. A faulty lift sensor gives the error message "Lifted" even if the robotic mower is standing flat and stable on the ground.

Replacing the lift sensor is a simple operation and requires no special tools. See below for step by step instructions!
At the bottom of the page there is a list of the spare parts needed for the job.

Tools we will need: An Allen wrench size 4 and tongue and groove or slip-joint pliers.

Step 1: Turn your Automower over and disconnect the charging cable. First remove the rubber cap; then disassemble the charging connector.

Step 2: Loosen the screws on the chassis. On the Automower 220AC and 230ACX the chassis is secured with four screws in total. Two at the rear and two under the flap for the cutting height adjustment.

Step 3: Remove the clip that holds the microswitch. Then lift the chassis off the robot. Note! Be careful not to lose the locking washers located on top of the two lifting sensors at the front of the robot.

Step 4: Locate the lift sensors, marked in yellow. It may be useful to know that only the right lift sensor (seen from the rear) has a magnet fitted as standard. The magnet is the one that works together with the circuit board inside the robot. So the left lift sensor is simply a 'dummy'.

Step 5: Turn the robotic lawnmower over. Use pliers or a poly-grip to hold the rubber damper and a size 4 Allen wrench to unscrew the screw holding the lift sensor.

Step 6: Remove the old lift sensor.

Step 7: Install the new lift sensor. Keep in mind that the magnet should point towards the robot's body. See the picture. Do the same procedure on the other side (if it also needs to be replaced).

Step 8: Now turn the robot over and check that the magnets are pointing towards each other. See the arrows in the picture.

Step 9: Now it's time to put the chassis back. Insert the microswitch through the hole and replace it with the clamp. Make sure to replace the lock washers on the respective lift sensors; otherwise there is a risk that the lift sensors will turn and generate the error message "mower lifted". The image shows the spiked lock washers.

Step 10: Once the body is mounted and screwed in place, turn the mower over and reinsert the charging connector, making sure the rubber plug is firmly in place.

No programming is required after installing a new lift sensor. Just use your lawnmower as usual.