Cans are not welded, display shows Phase T error. (Old version PM)
Check the main supply
R-380VAC (L1), S-380VAC (L2), T-380VAC (L3).
Check if all green LED’s are “ON”.
Check in the display of pacemaker the actual displayed voltage R, S and T! (old version PM)
If you can see these values and one of them looks to low, you can adjust it with the three small potentiometer on left side of processor board (old version PM).