Haier AB122ACERA Service Manual - Page 41

Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Trouble description Display of LED borad Analyze and diagnose LED 5-4-3-2-1 IPM failure 00001 IPM failure Abnormal of DC moter Communication error between indoor and outdoor unit Compressor discharging temprerture protection Spdu / IPM module over current protection Abnormal of outdoor ambient sensor Abnormal of piping sensor High pressure protection Abnormal of compressor discharge sensor The power supply is not the 50Hz Module PWM select circuit error 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 Jam of DC motor or motor failure Communication fail over 4min Compressor discharging tempreature over 120 centigrade Current of spdu / ISPM module over limit Outdoor ambient sensor short-circuit or open-circuit last 60 sec Piping sensor short-circuit or open-circuit last 60 sec System high pressure over 4.5Mpa Compressor discharge sensor short-circuit or open-circuit last 60 sec The power supply is not the 50Hz Module PWM select wrong circuit Flash times of LED on mainborad 1 2 3 4 5 6 7 8 9 10 11 Detect PFC over-current 01100 The current of PFC circuit is too high 12 Module error 01101 Module error 13 Eeprom failure 01110 Outdoor main board eeprom fail 14 Compressor jam(only for spdu) 01111 Inner compressor is abnormal jamed 15 Compressor start-up abnormal 10001 Compressor start-up abnormal 17 Compressor parameter error 10010 Wrong compressor parameter is selected in the Eeprom 18 Circuit error detected by current 10011 Circuit damage detected by the current 19 Abnormal of Compressor suction sensor 10101 Compressor suction sensor short-circuit or open-circuit last 60 sec 21 SPDU Communication error 10110 Communication error send from SPDU 22 Communication error between main board and spdu module 10110 Communication fail over 4min 22 Low pressure protection 11000 System low pressure under 0.05Mpa 24 Condenser air inlet temp. sensor failure 11001 Condenser air inlet temp. sensor short-circuit or open-circuit last 60 sec 25 Module over-voltage protection (only for ISPM) 11010 Send from ISPM module 26 Module lack-voltage protection (only for ISPM) 11011 Send from ISPM module 27 Compressor phase loss 11110 U/V/W loss 30 PFC voltage abnormal 11111 Voltage of PFC circuit is abnormal 31 Compressor U-phase over-current Compressor V-phase over-current Compressor W-phase over-current 4-way valve reverse failure 00101 The current of compressor U-phase is too high 32 00101 The current of compressor V-phase is too high 33 00101 The current of compressor W-phase is too high 34 Alarm and stop if detect Td-Tci=25 last for 1min Lack off refrigerant or discharge side dirty 11101 after compressor has started for 10min in cooling mode, confirm the failure if it appears 3 times 29 in one hour 41