MegaLife ARV Series, Руководство по обслуживанию, Страница: 157 / 172

MegaLife ARV OUTDOOR UNIT
–
ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
157
temperature is same or not which between inlet and
outlet piping of the EXV.
NO
↓
Pressure sensor is abnormal?
→
Replace sensor
NO
↓
System lack of refrigerants? Through check the
discharge temperature
、
high pressure value and so
on to judge.
→
Add refrigerant
NO
↓
Contact the manufacturer's Technician
5.3 F9 Error code
F9
：
Compression ratio too low protection
When detect the pd / ps
＜
1.8
，
then system begin to increase the compressor
running frequency . every 40s later detect again , After 45 cycles and the pd / ps
＜
1.8
remain the same . Then will appear F9 Error code, whole system stop running.
※
pd: High pressure value ps: Low pressure value
↓
4-way valve is abnormal? Through
check the inlet temperature of the
condenser
→
Adjust or replace 4-way valve