Samsung Possible Cause and Solution

Code	Possible Cause	Solution
E1	Short of indoor temperature sensor Open of Indoor temperature sensor	Check of departure of indoor temperature sensor Check of PCB open/short
E5	Short of indoor heat exchanger sensor Open of indoor heat exchanger sensor	Check of indoor exchanger sensor departure Check of PCB open/short Replacement of sensor
E6	Short of outdoor heat exchanger sensor Open of outdoor heat exchanger sensor	Check of outdoor exchanger sensor departure Check of PCB open/short Replacement of sensor
E7	Short of heater temperature sensor Open of heater temperature sensor	Check of heater wiring diagram Check of sensor attachment location
EL	When the electrical heater is overheated	Check of heater temperature sensor departure Check of PCB open/shore Replacement of sensor

Code	Possible Cause	Solution
* 1	Indoor unit thermistor sensor error	Indoor unit thermistor sensor PCB of the Indoor unit
* 5	Indoor unit pipe thermistor sensor error	Indoor unit pipe thermistor sensor PCB of the indoor unit
* 6	Outdoor unit thermistor sensor error	Outdoor unit thermistor sensor PCB of the outdoor unit
* 9	Float switch error	Drain pump, Float switch Drain system DIP switch (SW2) of the indoor unit (The No.2 and No.4 switches must be at “ON” position.)
* A	A Indoor and Outdoor communication error	Communication cables of indoor and outdoor units PCB of indoor and outdoor units
*C	Wired remote controller communication error	Wired remote controller cables, Wired remote controller Main/Sub PCB of the indoor unit
* D	Outdoor pipe thermistor sensor error	Outdoor pipe thermistor sensor PCB of the outdoor unit

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