550/450 EPOS Error: Searching for Satellites

The Husqvarna EPOS mowers work on the RTK technology that relies heavily on GPS signals to be able to provide accurate location of the mowers. The RTK system contains 3 main components - The Reference Station, Mower and the GNSS satellites. The reference station and the mower are constantly able to locate themselves using the satellites. The reference station then sends correction signals to the mower to help it update its location to an accuracy of a centimeter. 

In this process, the mower and the reference station constantly need to have visibility to the sky to be able to receive GPS signal. There may be certain instances when the reference station or mower may not be able to get GPS signal,

1. The satellites are constantly moving and it is possible that there may be certain time instances during the day when the reference station and/or the mower may not have visibility to the minimum number of satellites and a "Searching for Satellite" error may show up. Typically this is a self-correcting situation and once sufficient satellites are visible, the operation resumes.
2. The mower is another component that is constantly moving. Depending on its installation layout, it is possible that it loses signal under canopy of a tree or near a tall structure/building. It is also possible that the transport path of the mower is defined such that it has to pass through areas where GPS signal is weak. In such instances the mower may show the error "Searching for Satellites" and stop operating until the signals are re-established. 

Resolution:

This is a self-resolving error as long as it is a temporary loss of satellite signal. However if the issue is persistent in areas where GPS signal is perpetually weak (like under tree canopies, close to structures/buildings etc), then the best way to resolve would be to remove objects that are causing the obstruction (trim tree branches, remove barriers etc) (or) create a "stay-out" zone in the areas so that the mower does not work in areas with poor GPS signal strength.