Samsung AQ09MSBN Service Manual page 37

12-2 Trouble check in the initial status
12-2-1 Diagnosis and marking of the part in trouble.
Please check the air conditioner operation status and write the check result in the chart in the room.
Description
Indoor unit room temperature sensor error
(open or short)
Indoor unit heat exchanger temperature sensor error
(open or short)
Indoor fan motor mal function
EEPROM error
Option error
(option wasn't set up or option data error)
12-2-2 Operation with abnormal motion
No Abnormal condition
1 No response from
the remote control
operation signal.
2 Unable to operate the
outdoor unit
12-2
Inspection
• Plug out and plug in 5 seconds later. Able to operate the
• Press the TURBO button with the
remote control.
• In 3 minutes, check the voltage
between the indoor unit terminal
block N1 and 1.
OPERATION
OK
remote control.
Unable to operate
Press the
the remote control.
• If it operates, the remote control and
indoor unit receiver are in trouble.
• If not, the indoor unit is in trouble.
AC200V ~ AC240V Problem with the outdoor unit or PCB
No power source Problem with the relay (RY71) or PCB
displayed.
LAMP
TIMER TURBO
: Lamp off : Lamp flickering
Initial Diagnosis
button in the indoor unit.
Samsung Electronics