Lennox LI012CO-230P432 Service Manual page 65

10.Diagnosis process for outdoor communication circuit
Test voltage
value with Test
10 position in
diagram with
voltage meter
Number jumping
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
Number jumping
The circuit of
outdoor unit
communication
62
Start
Y
Y
Y
Y
Y
is normal
N
N
Outdoor unit
malfunction
N
N
Service Manual
End
Installation and Maintenance