Samsung AVMKH020EA4 Service Manual page 231

Troubleshooting
11-5-7 Clogging of the refrigerant pipe of sensor attaching part at the indoor unit inlet/Department of a sensor
• The temperature of indoor unit inlet is so higher than
that of the other indoor unit.
• The step of EEV is down.
• Ax error (Department of drain pipe sensor of No. x
indoor unit inlet) may be occurred at the outdoor unit
PCB. (According to the condition of temperature)
11-45
Phenomenon Check method
• Check the department of temperature sensor of indoor unit
inlet.
• Check the sensible temperature of the drain pipe at the
sensor of indoor unit inlet.
→ If it is higher than the sensible temperature of another
pipe, the pipe is clogged. : Displace the heat exchanger.
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