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Installer's Guide
Before starting, insure the
blower wheel,
indoor
and outdoor
coils are
clean.
Troubleshooting Indoor TXV
I
Cooling Mode
~--
N
o-:-...:.
_
_
_
>-----------------~-------YES------------
-------------w
NO
Verify tine set is
sized properly
NO·
for
appficalion
NO
NO
y
Confirm
that
charge
is
corred.
YES
,
The
system
is
running at
max
capac;lty
and this
may
be
causing
the
High superheat
wail until Indoor
temperature
is
leS&
thall
80F
end
check
superheat again.
Confirm
that
charge
__
YES- is
correct
and look
for
dirty
or restricted
outdoor
coil.
YES
I
l
emove sensing bulb from the
suction
line.
Measure superheat
at indoor coil while hOlding the
ulb in bare hand for one minute
oes superlleat decrease?
NO
!
Verify
Inlet
screen
of Inlet tube
assembly is dear
of
debris
-
YES
asure superlleat at
Indoor
coil
while placing the bulb in an ice
and water bath for one minute.
es superfleat increase?
NO
T
Verify Inlet
screen
of
Intel
tube
assembly is
dear
of
debris
Repla~:e
the
TXV
TXVisOK
YES
8
18-AD3901-1 A-EN
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