Gree GWH18YD-K6DNA1A/I - Page 83

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Installation and Maintenance
Service Manual
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Y
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Start
Test the voltage
of Test 10
The value is changing
Test the voltage
of Test 13
Test the voltage
of Test 11
Test the voltage
of Test 12
The value is changing
The value is changing
The value is changing
Detection process of outdoor communication circuit (refer to the outdoor key detection points)
End
Fault of outdoor
unit
Outdoor
communication
circuit is normal