Haier AB072XCEAA Service Manual - Page 62

Chff^j\bZe Abj Chg]blbhg^j 9.2.4. Diagnostic code Display 1 Display 2 Display 3 1 01 01 2 02 02 Diagnostic description Indoor ambient temp. sensor failure Indoor coil temp. sensor failure 3 4A 11 4 49 12 5 48 10 6 53 14 7 47 22 8 07 06 9 06 05 10 08 21 Outdoor ambient temp. sensor failure Outdoor coil temp. sensor or compressor discharging temp. sensor failure Over-current protection High pressure abnormal Power supply abnormal Communication between wired controller and indoor abnormal Communication between indoor and outdoor abnormal Drainage system failure 11 0B 30 12 03 20 13 0D 31 indoor PCB CN12(Outside alarm signal input) abnormal Gas pipe temp. sensor abnormal Solenoid valve abnormal 14 4C 15 15 05 17 16 54 26D Discharging temp. sensor abnormal EEPROM abnormal Low pressure switch abnormal 17 50 15 18 12 23 Compressor overheat Abnormal mode 21 32 07 22 54 08 Outdoor power abnormal The current is overlow model Mark: Display 1: For remote type, flash times; Display 2: Diagnostic code on YR-E12; Display 3: For central controller YCZ-A001 Possible reason sensor broken down or short circuit for more than 2m continuously sensor broken down or short circuit for more than 2m continuously sensor broken down or short circuit for more than 2m continuously Sensor broken down or short circuit for more than 2m continuously CT check abnormal 3 times in 30m High pressure switch acts 3 times in 30m Fault phase, out of balance greatly Communication abnormal for more than 4m continuously Communication abnormal for more than 4m continuously Float switch broken down for more than 25m continuously Outside signal broken down for more than 10s Sensor broken down or short circuit for more than 2m continuously Solenoid valve act incorrectly 3 times continuously sensor broken down or short circuit for more than 2m continuously EEPROM data missing Low pressure switch acts in normal running(Open : Alarm, Close : Normal) The discharging temp, is higher than 120℃ Indoor operation mode is different with the running indoor unit. (for example: one in cooling, one in heating) Check outdoor power model wires connection or change the model No signal comes from current testor or compressor doesn't work z 60 z