83
Data analysis
No. problems diagnose remark
1
one EEV
can not
be closed
fully
open angle of EEV on stop indoor
shows 4 (close fully), normally the coil
temp. should be close to indoor ambient
temp. （TA±3）, this indoor coil temp. is
much lower than ambient temp., that
should be EEV does not closed fully and
cause liquid return---to find the reason
diagnose
should be
done after oil
is return and
system
become
stable
2
one
ambient
temp.
sensor
failure
ambient sensor failure---to find the
reason
82
Part 2
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