Samsung MH020FVEA Service Manual page 148

Troubleshooting
9-3-3 Checking Indoor controller
9-3-4 Checking Power cable and Communication cable
See 12-2 "Checking and Testing operations" and installation manual.
9-3-5 Checking Temperature sensor
See 12-5 "Fault Diagnosis of Major Parts".
In case of a sensor in outdoor unit, temperature can be monitored with "VIEW MODE".
Press K4 key on the outdoor display PCB for several time to change the display to sensor temperature value.
Left 1 digit of the LED is data index and Right 2 digits are the value.
Index
8
9
A
B
9-16
Discharge sensor temperature
OLP sensor temperature
Condenser sensor temperature
Outdoor sensor temperature
Value Remark
The unit is degree C
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