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Error number
Errors
Meaning
Main cause of occurrence
45
(451)
Heat exchanger
pipe temperature
sensor error
Resistance measurement
value of a sensor is abnor-
mal (Open/Short)
1. Temperature sensor connector connection defect
2. Temperature sensor defect (Open/Short)
3. PCB defect
46
(461)
Compressor suc-
tion temperature
sensor error
Resistance measurement
value of a sensor is abnor-
mal (Open/Short)
1. Temperature sensor connector connection defect
2. Temperature sensor defect (Open/Short)
3. PCB defect
n
Failure diagnosis method
Is a sensor normally
connected to PCB?
Insert a sensor to PCB
Sensor replacement
Is a resistance value of a
sensor normal? [Note 1]
Correspond PCB replacement
No
No
Yes
Yes
[Note 1]
An error occurs in case of more than 100 kΩ (Open) or less than 100 Ω (Short)
Reference:
A temperature sensor is normal if a resistance value changes depending upon the temperature and next resistance
value is shown based on the current temperature (±5% deviation)
Air temperature sensor: 10 ℃ = 20.7 kΩ : 25 ℃= 10 kΩ : 50 ℃= 3.4 kΩ
Pipe temperature sensor: 10 ℃ = 10 kΩ : 25 ℃= 5 kΩ : 50 ℃= 1.8 kΩ
Error code check