Haier AW09ES2VHB Instructions De Service page 29

Error Codes and Description Indoor Display ..................................................................................................................... 30
Indoor Unit Display ......................................................................................................................................................................... 30
Indoor AC Fan Motor Malfunction ..................................................................................................................................... 31
Indoor Unit Display ......................................................................................................................................................................... 31
E14 ............................................................................................................................................................................ 31
Outdoor DC Fan Motor Fault ............................................................................................................................................. 32
Outdoor Unit Display ..................................................................................................................................................................... 32
LED1 Flashes 9 Times .............................................................................................................................................. 32
IPM Protection ................................................................................................................................................................ 33
Outdoor Unit Display ..................................................................................................................................................................... 33
LED1 Flashes 2 Times .............................................................................................................................................. 33
Over-current of the Compressor ...................................................................................................................................... 33
Outdoor Unit Display ..................................................................................................................................................................... 33
LED1 Flashes 3 or 24 or 25 Times ........................................................................................................................... 33
The Communication Fault Between IPM and Outdoor PCB ................................................................................................ 34
Outdoor Unit Display ..................................................................................................................................................................... 34
LED1 Flash 4 Times .................................................................................................................................................. 34
Power Supply Too High or Too Low ................................................................................................................................... 35
Outdoor Unit Display ..................................................................................................................................................................... 35
LED1 Flashes 6 Times .............................................................................................................................................. 35
Overheat Protection for Discharge Temperature .............................................................................................................. 36
Outdoor Unit Display ..................................................................................................................................................................... 36
LED1 Flashes 8 Times .............................................................................................................................................. 36
Communication Fault Between Indoor and Outdoor Units ................................................................................................ 36
Indoor Unit Display ......................................................................................................................................................................... 36
E7 .............................................................................................................................................................................. 36
Outdoor Unit Display .....................................................................................................................................................................36
LED1 Flashes 15 Times ............................................................................................................................................ 36
Loss of Synchronism Detection ........................................................................................................................................ 37
Outdoor Unit Display ..................................................................................................................................................................... 37
LED1 Flashes 18 or 19 Times .................................................................................................................................. 37
Indoor Unit Overload in Heating Mode .............................................................................................................................. 37
Outdoor Unit Display ..................................................................................................................................................................... 37
LED1 Flashes 18 Times ............................................................................................................................................ 37
Checking System Components ........................................................................................................................................ 38
Checking Outdoor Unit Components ............................................................................................................................... 38
Checking the Outdoor Unit Sensors ............................................................................................................................................. 38
Checking the Reversing Valve Coil ................................................................................................................................................ 38
Checking the DC Fan Motor ........................................................................................................................................................... 38
Checking the EEV Stepper Motor .................................................................................................................................................. 38
Checking the PFC Reactor ............................................................................................................................................................. 38
Checking the Socket Protect Component ....................................................................................................................................39
Checking the Compressor Windings ............................................................................................................................................. 39
Checking the Electrical Base Pan Heater ......................................................................................................................................39
Checking Indoor Unit Components ................................................................................................................................... 39
Checking the Indoor Unit Sensors ................................................................................................................................................. 39
Checking the Up/Down or Left Stepper Motor ............................................................................................................................ 40
Checking the Indoor DC Fan Motor ............................................................................................................................................... 40
Optimizing Performance .................................................................................................................................................. 40
Cleaning the Front Cover .................................................................................................................................................. 40
Troubleshooting Tips ....................................................................................................................................................... 41
Error Codes & Problem Solving
Table of Contents
ERROR CODES & PROBLEM SOLVING PAGE 29