241
Indoor Unit
Error Code
Abnormality Control Areas to verify
F15-01 Drain level error
Drain pump, float switch, drain pipe, indoor unit
main PCB, connector CN-DRMTR, CN-TH2.
F17-02 Indoor DC fan motor error Indoor DC fan motor, connector CN-FM.
F20-01 Indoor liquid pipe temperature sensor error
Indoor liquid pipe temperature sensor lead wire,
indoor unit main PCB, connector CN-TH2.
F20-02 Remote control thersistor error Remote control thermistor.
F21-01
Indoor heat exchanger temperature sensor
error
Indoor heat exchanger temperature sensor lead
wire, indoor unit main PCB, connector CN-TH1.
F22-01 Indoor gas pipe temperature sensor error
Indoor gas pipe temperature sensor lead wire,
indoor unit main PCB, connector CN-TH1.
F25-01 Indoor address double registration error Indoor unit address.
F26-01
Remote control communication line
disconnection error
Remote control lead wire, terminal, indoor unit
main PCB connector CN-REM.
F27-01
Indoor / outdoor unit communication line
disconnection error
Indoor / outdoor unit communication lead wire,
connection terminal, indoor unit main PCB
connector CN-UN, outdoor unit address.
F31-08 * Indoor unit freezing error.
Abnormal indoor unit expansion valve, indoor
unit heat exchanger sensor.
* For indoor unit with error, indoor unit man PCB
LED1 blinking ON: 2.5 sec. OFF: 0.5 sec..
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