Haier AB122ACERA Service Manual - Page 47

Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA After compressor is running for 3 minutes, the unit will check the pipe pressure, when the pipe pressure is too low and low pressure switch is running for 30 senconds, compressor and outdoor fan motor will stop and will send failure 13. Trouble code The remote receiver, wired controller and indoor PCB indicator all can indicate the failure code. Remote control indoor PCB flash times Wired controll er display Central controll er Fault description display Possible cause Remedy 10 08(08H) 21D Fault in drain Float switch is open 25m or due to the signal, system longer resumable 1 01(01H) 01D Indoor ambient sensor broken down or short due to the signal, temp. sensor failure circuit for more than 2m resumable continuously 2 02(02H) 02D Indoor pipe temp. sensor broken down or short due to the signal, sensor failure circuit for more than 2m resumable continuously 3 74(4AH) 11D Outdoor ambient sensor broken down or short due to the signal, temp. sensor failure circuit for more than 2m resumable continuously 4 73(49H) 12D Outdoor pipe temp. sensor broken down or short due to the signal, sensor failure circuit for more than 2m resumable continuously 5 72(48H) 10D Overcurrent Detector CT current is above Need to be the limit 3 times within 30m. checked, reset 6 83(53H) 14D High pressure High pressure switch acts for Need to be malfunction 3 times in 30m checked, reset 7 71(47H) 22D Power failure Wrong phase, phase Need to be failure or loss checked, reset 8 07(07H) 06D Communication communication abnormal for due to the signal, failure between more than 4m continuously resumable wired controller and indoor unit 9 06(06H) 05D Communication communication abnormal for due to the signal, failure between more than 4m continuously resumable indoor and outdoor units 11 11(0BH) 30D External alarm External alarm is cut out for due to the signal, signal input 10s or longer resumable 12 03(03H) 20D Fault in coil/suction sensor broken down or short due to the signal, line temp. sensor circuit for more than 2m resumable continuously 13 13(0DH 31D Temperature Directional valve malfunction Need to be ) shut-off repeats 3 times checked, reset 14 76(4CH 15D Fault in discharging sensor broken down or short due to the signal, ) temp. sensor circuit for more than 2m resumable continuously 15 05(05H) 17D EEPROM error EEPROM data loss Default operation 16 84(54H) 26D Low pressure low pressure switch is Need to be malfunction activated checked, reset 17 80(50H) 15D Compressor Detected temperature of Resrorable overheat discharge line is higher when lower than 120℃ than 100℃ 18 12(0CH 23D Fault in operation Indoor units operate in Resrorable in ) mode different modes same operation mode 19 75(4BH) 18D Outdoor coil sensor broken down or short due to the signal, B(suction circuit for more than 2m resumable sensor-multi) continuously 20 77(4DH 15D Outdoor sensor broken down or short due to the signal, 47