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"...
M2
m3
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 SI unit of length/distance is the meter. The symbol is ' m '.Since 1983, it's defined as the length of the path traveled by lightin vacuum in 1/299,792,458 of a second.
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.
A cubic meter is a unit of volume with the same volume as a cube with dimensions 1 meter by 1 meter by 1 meter. The symbol typically used to designate cubic meters is m3
meter: symbol (m) it's unit is DISTANCE
The symbol for nanometer is nm.