Diagnosis of malfunction: Abnormality of indoor coil thermistor (RT2) Signal transmission error (Remote controller does not respond to indoor controller signal.) Cause: Bad contact of transmission wire Signal transmitting/receiving circuit is abnormal. Wrong operation due to noise wave emitted by other appliances Check points: Check the transmission wire. Check with another remote controller. If “P3” … Read more
Diagnosis of malfunction: Abnormality of indoor coil thermistor (RT2) Cause: Bad contact of thermistor Damaged thermistor Check points: Check the thermistor. Measure the resistance of the thermistor. Normal resistance should be as follows. 32°F····15kΩ 86°F·····4.3kΩ 50°F······9.6kΩ 104°F···3.0kΩ 68°F······6.3kΩ If the resistance is normal, replace the indoor controller board.
Diagnosis of malfunction: Abnormality of room temperature thermistor (RT1) Cause: Bad contact of thermistor Damaged thermistor Check points: Check the thermistor. Measure the resistance of the thermistor. Normal resistance should be as follows. 32°F····15kΩ 86°F·····4.3kΩ 50°F······9.6kΩ 104°F···3.0kΩ 68°F······6.3kΩ If the resistance is normal, replace the indoor controller board.
Diagnosis of malfunction: Signal transmitting/receiving error (Indoor controller does not respond to remote controller signal.) Cause: During individual unit control Bad contact of transmission wire Signal transmitting/receiving circuit is abnormal. Check points: Check the transmission wire. Check with another remote controller. If “E0” is still indicated, replace the indoor controller board. If other check code … Read more
Checking code 1302: High pressure abnoramlity 1 (Outdoor unit) Meaning, detecting method When press. sensor detects 28kg/cm2 G (2.47MPa) or more during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. When 30kg/cm2 G (2.94MPa) or more pressure is detected again (the … Read more