Ask if it is possible to help understand the meaning of errors

Neoventa Stan S31 fetal monitor error log ;

1) E165

"E" means what is error in the interface between the software and hardware
"165" don't know value

2) S374
3) S384
4) S340

"S" not known event,for me smile
374;384;340 not know value

According of the Neoventa classification
"V" - System events
"E"- External error
"H"-Hardware error

With best regards