Hi guys i am currently working on a Fujitsu AOT45 Split ducted a/c unit. We have had a power spike with no spike protection that has knocked out 4 of the same units, units have had new indoor filter modules as that appeared the problem although has not fixed it. Terminal 3 which is the control has correct voltage of modulating 70-95VAC when disconnected although has 220VAC coming from indoor PCBoard just wondering if anyone has come across this or a similar issue and what the end result was. Have had fujitsu down and followed instructions which has not fixed problem