Johnson Controls DCX18CSB21S, Service Manual

Page: 65 / 90

5 7
9.Diagnosis
P
rocess for
O
utdoor
C
ommunication
C
ircuit
Start
Test voltage
value with Test
10 position in
diagram with
voltage meter
Number jumping
Outdoor unit
malfunction
Test voltage
value with Test
13 position in
diagram with
voltage meter
Number jumping
Test voltage
value with Test
11 position in
diagram with
voltage meter
Number jumping
Test voltage
value with Test
12 position in
diagram with
voltage meter
Y
Y
Y
Y
Number jumping
The circuit of
outdoor unit
communication
is normal
Y
N
N
N
N
End