that is somewhat confusing to read - let's break it down -
The climate control does not work on heater, are you saying if you turn the temp up -
you don't get ANY hot air from the defroster vents or floor vents?
ac compressor works on ac,
compressor will not come on for heater.
are you saying when in the AUTO mode -
and you select a higher temperature -
the compressor does not engage?
rear window de-icer inop,
this is the electric grid built into the rear window -
and has nothing to do with the Climate Control system -
check the fuse -
not uncommon for the grid wire to be scratched/cut -
fan works on ac but not heater
does the fan actually stop turning -
something you actually hear?
or does the air just stop coming out of the dash vents?
keep in mind that you have almost no control of WHERE the air blows from -
except DEFROST -
ambient and cold air emit from the center - "dash" - vents -
and defroster vents if selected -
heated air only comes from the floor vents -
and defroster vents - if selected -
you can not get heated air through the dash vents -
or cold air from the floor vents -