Troubleshooting
93Samsung Electronics
Communication error (unable to receive data) Communication cable connection
Communication error (outdoor cannot communicate) Another indoor unit or indoor PCB
Indoor unit room temperature sensor error (Open/Short) Room temperature sensor, indoor PCB
Indoor unit heat exchanger in temperature sensor error (Open/Short) Heat exchanger in sensor, indoor PCB
Indoor unit heat exchanger out temperature sensor error (Open/Short) Heat exchanger out sensor, indoor PCB
Indoor unit heat exchanger in temperature sensor detached Heat exchanger in sensor
Indoor unit heat exchanger out temperature sensor detached Heat exchanger out sensor
Indoor unit heat exchanger in & out temperature sensor detached Heat exchanger in & out sensor
Indoor unit fan motor malfunction Fan motor and cable
More than 2 indoor units cool and heat simultaneously Another indoor unit operation mode
EEPROM error Indoor PCB
Option code setting error Option code
Cable miss-wiring Cable connection (Indoor & Outdoor unit)
The number of indoor unit mismatched
Cable connection (another indoor unit &
outdoor unit), SW01(outdoor)
Outdoor unit error Outdoor unit (Error code)
Main checking Point / Remark
Display
Explanation
The error indicated on the LED display of Indoor unit
DB98_20402A(1)_2 10/26/04 3:27 PM Page 93
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