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Troubleshooting
Si04-306
120
Service Diagnosis
4.19 Insufficient Gas
Remote
Controller
Display
U0
Method of
Malfunction
Detection
Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current
value and the compressor running frequency.
Gas shortage detection II : A gas shortage is detected by checking the difference between
indoor unit heat exchanger temperature and room temperature as well as the difference
between outdoor unit heat exchanger temperature and room temperature.
Malfunction
Decision
Conditions
Gas shortage detection I :
Input current <
(A/Hz) x Compressor running frequency × V
However, when the status of running frequency > 55 (Hz) is kept on for a certain time.
Note : The values are different from model to model.
Gas shortage detection II :
If a gas shortage error takes place 4 times successively, the system will be shut down. The error
counter will reset itself if this or any other error does not occur during the following 60-minute
compressor running time (total time).
Supposed
Causes
Refrigerant shortage (refrigerant leakage)
Poor compression performance of compressor
Discharge pipe thermistor disconnected, or indoor unit or outdoor unit heat exchanger
thermistor disconnected, room or outside air temperature thermistor disconnected
Stop valve closed
Electronic expansion valve defective
R410A
1756 / 256
–50
R22
2600 / 256
–300
RXD71BVMA
2420 / 256
55
Содержание FTKS50BVMA
Страница 17: ...List of Functions Si04 306 8 List of Functions...
Страница 35: ...Specifications Si04 306 26 Specifications...
Страница 143: ...Check Si04 306 134 Service Diagnosis...
Страница 187: ...Outdoor Unit Si04 306 178 Removal Procedure...
Страница 191: ...Others Si04 306 182 Others...
Страница 201: ...Wiring Diagrams Si04 306 192 Appendix FTKD 18 24 28 BVMS...
Страница 203: ...Wiring Diagrams Si04 306 194 Appendix RKD 18 24 28 BVMS...