Haier MRV II - Part 3 Debugging & Maintenance for R410 A System

85
Data analysis
No. problems diagnose
1
EEV of 6
indoors can not
open
liquid pipe (TC2) temp. is low,TC2 ＜
TA+10；
gas pipe (TC1) temp. is low
because the EEV can not open, so the
refrigerant does not flow, then the coil temp.
is close to ambient temp.
2
sensors of 2
indoors are
inserted
conversely
in heating mode the indoor TC1＞TC2, but
these two indoor TC1＜TC2
84
Part 2