press and hold enter for 5 secs , then it will flash _ _ _
then play arn til u get number 1
then enter
password is 1 1 1
after that you will see f01 , scroll and u will see f02
and on and on
1 is chiller cut in time , the other 1 is chiller cut off time ,
thats it , very easy
but pray that your default password wasnt change by the ex owner of the chiller
if its change only derrick can help u