60
Installation and Maintenance
Service Manual
Diagnosis process for outdoor communication circuit (refer to the key detection points of outdoor unit)
Start
Test voltage
valueof Test10
position in
diagram with
voltage meter
Number jumping
Number jumping
Number jumping
Number jumping
Outdoor unit
malfunction
Test voltage value
of Test 13 position
in diagram with
voltage meter
Test voltage
value of Test
10 position in
diagram with
voltage meter
Test voltage value
of Test 12 position
in diagram
with volltage
meter
Y
Y
Y
Y
Communication
circuit of
outdoor
unit is normal
Y
N
N
N
End
N
