Haier R410A 用户手册

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Only for training and service purposes

LGE Internal Use Only

01

Indoor unit air sensor error

02

Indoor unit pipe inlet sensor error

06

Indoor unit pipe outlet sensor error

Indoor unit sensor is

open/short

1. Indoor unit PCB wrong connection

2. Indoor unit PCB failure

3. Sensor problem (main reason)

** In case the value is more than 100k

Ω (open) or less than 100Ω (short), Error occurs

Refer: Resistance value maybe change according to temperature of temp sensor,

It shows according to criteria of current temperature(±5% margin) 

➔ Normal

Air temp sensor: 10°C = 20.7k

Ω : 25°C= 10kΩ : 50°C= 3.4kΩ

Pipe temp sensor: 10°C = 10k

Ω : 25°C= 5kΩ : 50°C= 1.8kΩ

■ Error diagnosis and countermeasure flow chart

Is sensor properly 

connected to PCB? 

Is the resistance value 

of sensor normal?*

Connect properly to PCB

Change the sensor

Change the PCB

Yes

Yes 

No

No

CN-ROOM : Indoor air temp sensor

CN-PIPE2  : Pipe outlet temp sensor

CN-PIPE1  : Pipe inlet temp sensor

Measure the resistance of outlet pipe temp sensor.