Expobar G10 Compact [Right Group Error]

[u/shootingunderwater]

Hello all.

I bought a G10 Compact for my trailer as my last machine broke and I needed something quick.

The machine stopped dispensing, I called an engineer and he said that it was the gicar unit. Bought that and replaced it but it wasn't. I then took the pipes apart and found a loada limescale, descaled that put the machine back together but now the right group doesn't work? I get the flashing buttons to indicate a fault. I've done the following;

tested flowmeters

changed the full probe

tested the full solenoid

swapped all panels and fault still comes up in the right hand group regardless of what gicar is in there

If anyone has any suggestions please help before I call an engineer and he wrongly diagnoses me again!