Mintemp error

[Emma_50]

I have an A20M.
I am using Cura 4.7.1. The board is a GT2560 v3.0 with Marlin 1.1.8

Since I have had it, it has never been able to print on the whole of the bed. As soon as Y got close to 125, the print stopped with the mintemp error. I was unable to fix this.
When the model is centred 0,0 is the centre of the bed. I have tried "origin at centre" both checked and unchecked. Neither makes any difference.
What can I do to to resolve this once and for all?
Thanks,
Emma,
x