they are absolutely f£*kin sh*t. the amount of ideals having the same problems is unreal. some are like this from install and ideal was blaming installers for not treating/cleaning systems even though they failing on full new build systems.
i would hit it with a large stick and see if that helps??
or call ideal and see what they are like to come out rather than throwing parts at it. i have not heard of a 90% certain repair as many people having many experiences with same fault codes
zzzzzzzzzzzzzzzzzzzzzzzzz, April 2008