IO resting issues. Ctec panel and Apollo IO's

Hi, I wonder of anyone has come across this problem and can point me in the right direction. The manufacturers are blaming each others kit and our fire engineer hasn’t experienced this issue before.



I am.an electrician and recently wired a new install in a care home setting. When we put the system into test, then reset it, all of the IO’s fail to reset unless the reset is pressed twice, then they are fine.



The panel is a C-tec XFP 2 loop, 32 zone addressable and the IO’s are Apollo XP 95’s.



Our supplier has advised us that older XP95 IO’sdont experience this issue.



Can anyone help?