27

For remote

Failure code

For central

Failure description

Reason

Remarks

 

Error

type, flash

on wired

control,

 

 

 

 

 

 

times

controller

failure code

 

 

 

 

 

display(

3

74(4AH)

11D

Outdoor ambient temp. sensor failure

Sensor broken down or short circuit for more than 2m continuously

 

 

 

1

01(01H)

01D

Indoor ambient temp. sensor failure

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

2

02(02H)

02D

Indoor coil temp. sensor failure

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

 

 

 

 

 

 

 

 

 

4

73(49H)

12D

Outdoor coil temp. sensor failure

Sensor broken down or short circuit for more than 2m continuously

 

 

 

For

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*ERA

5

72(48H)

10D

Over-current protection

CT check abnormal 3 times in 30m

 

 

 

6

83(53H)

14D

High pressure abnormal

High pressure switch acts 3 times in 30m

 

 

 

 

7

71(47H)

22D

Power supply abnormal

Fault phase, short of phase, out of balance greatly

 

 

 

series)

8

07(07H)

06D

Communication between wired

 

 

 

 

 

 

 

 

 

 

 

 

controller and indoor abnormal

Communication abnormal for more than 4m continuously

 

 

 

 

9

06(06H)

05D

Communication between indoor and outdoor abnormal

Communication abnormal for more than 4m continuously

 

 

 

 

10

08(08H)

21D

Drainage system abnormal

Float switch broken down for more than 25m continuously

 

 

 

 

11

11(0BH)

30D

Outside alarm signal input

Outside signal broken down for more than 10s

 

 

 

 

12

03(03H)

20D

Gas pipe temp. sensor abnormal

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

13

13(0DH)

31D

Temperature protection malfunction

Solenoid valve act incorrectly 3 times continuously

 

 

 

 

14

76(4CH)

15D

Discharging temp. sensor abnormal

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

15

05(05H)

17D

EEPROM abnormal

EEPROM data missing

 

 

 

 

16

84(54H)

26D

Pressure abnormal(low pressure)

Low pressure switch acts in normal running

 

 

 

 

17

80(50H)

15D

Compressor overheat

The discharging temperature is higher than 120degree

Resumable if

 

 

 

lower than 100

 

 

 

 

 

 

 

degree

 

 

18

12(0CH)

23D

Abnormal mode

Indoor operation mode is different with the running indoor unit.

 

 

 

 

19

75(4BH)

18D

Outdoor coil B(suction temp sensor-for MRV II)

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

20

77(4DH)

15D

Outdoor discharging B(oil temp sensor-for MRV II)

Sensor broken down or short circuit for more than 2m continuously

 

 

 

 

21

20(32D)

07D

SPDU module temperature protection

Spdu module temperature is too high

 

 

 

 

 

 

 

 

 

 

 

 

 

shows resumable fault, shows it is not resumable fault.

Trouble Shooting

Page 29
Image 29
Haier AC422AFERA installation manual For

AC422AFERA specifications

The Haier AC422AFERA is an innovative air conditioning unit designed to provide optimal comfort and energy efficiency for residential spaces. This model stands out due to its advanced features, smart technology, and user-friendly design, making it a popular choice among consumers seeking to enhance their indoor climate control.

One of the main features of the Haier AC422AFERA is its powerful cooling capability. It boasts a high cooling capacity that ensures effective temperature management even in the hottest summer months. The unit is equipped with a robust compressor that can quickly lower room temperatures while maintaining energy efficiency, making it ideal for large living areas or open-plan spaces.

In terms of technologies, the AC422AFERA utilizes inverter technology, allowing the compressor to adjust its speed efficiently. This results in quieter operation and reduced energy consumption, ultimately leading to cost savings on electricity bills. The inverter system also enhances the longevity of the unit, as it puts less strain on the compressor compared to conventional air conditioners.

The Haier AC422AFERA is designed with user convenience in mind. It includes a remote control feature, enabling users to adjust settings from the comfort of their couch or bed. The digital display is easy to read, providing real-time feedback on temperature settings and operational modes. Furthermore, the unit features multiple cooling modes, including fan-only and dehumidification settings, allowing users to customize their comfort levels based on specific needs.

Another noteworthy characteristic of this air conditioning unit is its air purification system. The AC422AFERA includes filters that help to capture dust, allergens, and airborne particles, promoting a healthier living environment. Regular maintenance is simplified, with washable filters that can be easily removed and cleaned, ensuring sustained performance and air quality.

The design of the AC422AFERA is sleek and modern, allowing it to blend seamlessly with various home interiors. Its compact size makes it suitable for both wall-mounted and portable applications. Additionally, the unit operates quietly, providing cooling comfort without disruptive noise, making it ideal for bedrooms or home offices.

In conclusion, the Haier AC422AFERA is a versatile and efficient air conditioning solution that combines advanced technology with user-friendly features. Its inverter technology, effective cooling capacity, air purification system, and modern design make it a compelling choice for anyone looking to invest in a reliable cooling system for their home.