I understand by reading on the forum that calcium hardness doesnt matter on an AG vinyl pool, but can really low CH cause any damage to my heater?

My levels are;

FC 2.5
CC 0.5
TC 3.0
PH Less than 7.0 (I just finished dropping my ALK and aeration is ongoing)
TA 90
CH 80
CYA 55

Thanks for youe help