Haier HBU-42CH03 用户手册

Power lamp flash

times/LED on

PCB flash times

failure description

Reasons

E0

10

Fault in drain system Float switch is open

E1

1

Indoor ambient

temp. sensor failure

Sensor broken down or short circuit for

more than 2m continuously

E2

2

Indoor pipe

temp. sensor failure

Sensor broken down or short circuit for more

than 2m continuously

E3

3

Outdoor ambient

temp. sensor failure

Sensor broken down or short circuit for more

than 2m continuously

E4

4

Outdoor  pipe  or

discharge  temp.

sensor failure

Sensor broken down or short circuit for more

than 2m continuously or outdoor discharge

temp. over 120  for 3 times continuously in

30m

E5

5

overcurrent

Indicate phase failure when been electrified

for  the  first  time,  indicate  overcurrent

protection during working procedure

E6

6

16

High pressure

malfunction

Outdoor high pressure switch acts

Low pressure

malfunction

Outdoor  low  pressure  switch  acts  or  the

proctector on the top of compressor breaks

for protection

E8

8

C o m m u n i c a t i o n

failure  between

indoor PCB and panel

or wired controller

Communication abnormal for more than 4m

continuously

E9

9

C o m m u n i c a t i o n

failure  between

indoor and outdoor

unit

Communication between indoor PCB and

outdoor PCB open for more than 4m

E7

13

Temperature cutoff

protection

System failure. System cooling or heating

function abnormal

12

Failure code

on wired

controller