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Error code check
8. Error code check
Error number
Errors
Meaning
Main cause of occurrence
01
Air temperature sensor error
Temperature sensor
Open/Short
1. Sensor connector~ Chiller board
contact defect
2. Chiller board defect
3. Sensor defect (Main cause)
n
Failure diagnosis method
Is a sensor normally
connected to Chiller board ?
Insert a sensor connector
to Chiller board
Sensor replacement
Is the resistance value
of a sensor normal?
[Note 1]
Chiller board
replacement
Yes
No
No
Yes
[Note 1]
An error is occurred 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
Temperature sensor resistance measurement
UI1,G : Air temperature sensor
