Gree GWH12MB-K3DNE3G Service Manual page 55

Measure voltage at the
Test 10 position as
shown in the diagram
Value jumping
Measure voltage at the
Test 15 position as
shown in the diagram
with a voltmeter
Value jumping
Measure voltage at the
Test 11 position as
shown in the diagram
with a voltmeter
Value jumping
Measure voltage at the
Test 12 position as
shown in the diagram
with a voltmeter
Value jumping
The communication
circuit of the outdoor
unit is normal
52
Start
with a voltmeter
Y
Y
Y
Y
Y
N
N
Fault with
outdoor unit
N
N
Service Manual
End
Installation and Maintenance