Malfunction

Failure description

Code on wired controller

 

 

Room temp. sensor abnormal

E1

 

 

Indoor coil temp. sensor abnormal

E2

 

 

Outdoor temp. sensor abnormal

E3

 

 

Outdoor coil temp. sensor abnorma

E4

 

 

Over-current malfunction

E5

 

 

High / Low pressure abnormal

E6

 

 

Communication malfunction between indoor PCB and panel

E8

 

 

Communication malfunction between indoor PCB and outdoor PCB

E9

 

 

The float switch malfunction

E0

 

 

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Haier HDU-28CF03, HDU-18HF03, HDU-18CF03 installation manual Malfunction