Troubleshooting Guide
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• Defective temperature sensor connection
• Defective temperature sensor
(Open/Short)
• Defective outdoor unit PCB
Error No. Error Type Error Point Main Reasons
Abnormal value of sensor
measurement (Open / Short)
HR unit liquid pipe tem-
perature sensor error
201(HR unit1)
205(HR unit2)
209(HR unit3)
213(HR unit4)
217(HR unit5)
221(HR unit6)
225(HR unit7)
229(HR unit8)
• Defective temperature sensor connection
• Defective temperature sensor
(Open/Short)
• Defective outdoor unit PCB
Error No. Error Type Error Point Main Reasons
Abnormal value of sensor
measurement(Open / Short )
HR unit
Sub-cooling inlet pipe
temperature sensor
error
202(HR unit1)
206(HR unit2)
210(HR unit3)
214(HR unit4)
218(HR unit5)
222(HR unit6)
226(HR unit7)
230(HR unit8)
• Defective temperature sensor connection
• Defective temperature sensor
(Open/Short)
• Defective outdoor unit PCB
Error No. Error Type Error Point Main Reasons
Abnormal value of sensor
measurement(Open / Short)
HR unit
Sub-cooling discharge
pipe temperature sensor
error
203(HR unit1)
207(HR unit2)
211(HR unit3)
215(HR unit4)
219(HR unit5)
223(HR unit6)
227(HR unit7)
231(HR unit8)
■ Error diagnosis and countermeasure flow chart
1) Check connection condition of temperature sensor and lead cable
2) Is value of temperature sensor normal? If not replace sensor
- Piping temperature sensor : 10°C = 10kΩ : 25°C= 5kΩ : 50°C= 1.8kΩ
3) If connection of sensor and value is correct, replace outdoor unit PCB
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