Doser 2.1 Slave - red led next to pump manual push buttons

[mlandscape]

Can anyone tell me why when each pump is run manually by pushing the control button on the pump a Red LED illuminates next to each of the four pump manual push buttons?

Does not happen on my other doser which was standalone until converted to slave for use with KHD

Also, when pump 1 has no permanent blue light and when dosing the red led lights again and still no blue light.

Many thanks