Error Codes And Problem Solving - Haier HSU09VHG(DB)-W Service Manual

Error Codes and Description Indoor Display ..................................................................................................................... 46
Indoor Unit Display ........................................................................................................................................................................ 46
Indoor AC Fan Motor Malfunction ..................................................................................................................................... 47
Indoor Unit Display ........................................................................................................................................................................ 47
E14 ............................................................................................................................................................................ 47
Outdoor DC Fan Motor Fault ............................................................................................................................................. 48
Outdoor Unit Display .................................................................................................................................................................... 48
LED1 Flashes 9 Times .............................................................................................................................................. 48
IPM Protection ................................................................................................................................................................. 49
Outdoor Unit Display .................................................................................................................................................................... 49
LED1 Flashes 2 Times .............................................................................................................................................. 49
Over-current of the Compressor ...................................................................................................................................... 49
Outdoor Unit Display .................................................................................................................................................................... 49
LED1 Flashes 3 or 24 or 25 Times ........................................................................................................................... 49
The Communication Fault Between IPM and Outdoor PCB ................................................................................................ 50
Outdoor Unit Display .................................................................................................................................................................... 50
LED1 Flash 4 Times .................................................................................................................................................. 50
Power Supply Too High or Too Low ................................................................................................................................... 51
Outdoor Unit Display .................................................................................................................................................................... 51
LED1 Flashes 6 Times .............................................................................................................................................. 51
Overheat Protection for Discharge Temperature .............................................................................................................. 52
Outdoor Unit Display .................................................................................................................................................................... 52
LED1 Flashes 8 Times .............................................................................................................................................. 52
Communication Fault Between Indoor and Outdoor Units ................................................................................................ 52
Indoor Unit Display ........................................................................................................................................................................ 52
E7 .............................................................................................................................................................................. 52
Outdoor Unit Display .................................................................................................................................................................... 52
LED1 Flashes 15 Times ............................................................................................................................................ 52
Loss of Synchronism Detection ........................................................................................................................................ 53
Outdoor Unit Display .................................................................................................................................................................... 53
LED1 Flashes 18 or 19 Times .................................................................................................................................. 53
Indoor Unit Overload in Heating Mode .............................................................................................................................. 53
Outdoor Unit Display .................................................................................................................................................................... 53
LED1 Flashes 18 or 19 Times .................................................................................................................................. 53
Checking System Components ........................................................................................................................................ 54
Checking Outdoor Unit Components ............................................................................................................................... 54
Checking the Outdoor Unit Sensors ............................................................................................................................................ 54
Checking the Reversing Valve Coil ............................................................................................................................................... 54
Checking the DC Fan Motor .......................................................................................................................................................... 54
Checking the EEV Stepper Motor ................................................................................................................................................. 54
Checking the PFC Reactor ............................................................................................................................................................ 54
Checking the Compressor Windings ............................................................................................................................................ 55
Checking Indoor Unit Components ................................................................................................................................... 55
Checking the Indoor Unit Sensors ................................................................................................................................................ 55
Checking the Up/Down Stepper Motor ....................................................................................................................................... 55
Checking the Left Stepper Motor ................................................................................................................................................. 55
Checking the Indoor DC Fan Motor .............................................................................................................................................. 56
Error Codes & Problem Solving
Table of Contents
ERROR CODES & PROBLEM SOLVING PAGE 45