If actual pressure is in
conformance with the
measured data by sensor
Check if compressor
running current is normal
Check if 4-way valve
is interconnected
Replace pressure sensor
Check compressor
Replace 4-way valve
No
No
Yes
Yes
Yes
If actual pressure is in
conformance with the
measured data by sensor
Check if terminal of
electronic expansion
valve coil is fixed well
Check if piping
system is clogged
Check if system is
lack of refrigerant
Check if stop valve
is open fully
Replace pressure sensor
Open stop valve
Recharge refrigerant
Re-connect the terminals
Clear the piping
No
No
No
No
Yes
Yes
Yes
Yes
Yes
[39-0, 39-1] Low pressure too low and compression ratio too high
[39-2] Compression ratio too low
65
Содержание YEVFD Series
Страница 13: ...3 Dimension 11...
Страница 14: ...4 Function Parts layout 12...
Страница 15: ...5 Center of gravity 13...
Страница 16: ...6 Refrigerant Circuit 14...
Страница 24: ...10 Operation Range 22...
Страница 31: ...29...
Страница 32: ...Case 2 obstacles on the inlet and top side 30...
Страница 35: ...33...
Страница 48: ...13 PCB Photo PCB code 0151800421B LED7 LED2 LED8 LED9 BM1 LED10 LED4 LED3 LED6 LED5 SW1 SW2 SW3 46...