Hi Bro OceanViper,
Thanks for the advise
This morning before i left home for work i touch the area which you mention and is warm.
cause i do have a spare chiller which is using now.
and the chiller which having problem I have done reserve flushing and now just running the chiller with RODI water and see does it cools down the water is my water drum. as i ask my wife to update me as she is working from Home.