If you mean the red dot below the digital hour meter, it's telling you that the charging system isn't throwing enough voltage to operate the electric PTO and charge the battery efficiently.
The above is the symbol of flow meter.
THE SYMBOL FOR Flow Meter is : FI as Flow Indicator
The code really says "CHG" and not LH6. I have to admit that it looks like an LH6 to me, as well on my mower. Therefore, what it is really saying in two different flashed messages, is "CHG" "OIL".... "Change Oil"...
m3
M2
The symbol for a Coriolis meter is a curved "S" shape with two straight lines perpendicular to the curve on either side.
It is the lower case m.
It is flashing to remind you that is time for service. Original ones had a button on the back to reset it; newer ones did it automatically after an hour or two.
The base unit is (m) and the symbol is (l) !
The symbol for nanometer is "nm" – it represents a metric unit of length equal to one billionth of a meter.
The single most important factor affecting the value of a used tractor is the total run time on the tractor's runtime meter. After this come condition, appearance and how appropriate it is for the local farming practices.
The ALT symbol for cubic meter is "m³." This is a standard unit of volume in the International System of Units (SI) and is used to measure the volume of three-dimensional space. The symbol consists of the letter "m" for meter, followed by a superscript "3" indicating the cubic measurement.