Gree GWH09MB-K3DNA3K/I Service Manual page 58

Start
Measure voltage at the
Test 10 position as
shown in the diagram
with a voltmeter
Value jumping
Y
Measure voltage at the
Test 15 position as
shown in the diagram
with a voltmeter
Y
Value jumping
Y
Measure voltage at the
Test 11 position as
shown in the diagram
with a voltmeter
Value jumping
Y
Measure voltage at the
Test 12 position as
shown in the diagram
with a voltmeter
Value jumping
Y
The communication
circuit of the outdoor
unit is normal
N
N
Fault with
outdoor unit
N
N
End