MegaLife ARV Series, Руководство по обслуживанию, Страница: 156 / 172

MegaLife ARV OUTDOOR UNIT
–
ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
156
Check whether refrigerant circuit is unblocked
1. IDU’s coil of EXV is abnormal?
2. IDU’s EXV is abnormal, through monitoring
software to check the EXV’s open degree
3. IDU’s EXV is dirty block?
Yes
→
1. Replace power coil of EXV
2. Replace EXV
↓
Contact the manufacturer's Technician
5.2 F8 Error code
F8
：
Compression ratio too high protection
When detect the pd / ps
＞
8
，
then system begin to slow down the compressor
running frequency . After the frequency was down to the lowest value and detected the
pd/ps
＞
8 all the time within 400s . Then will appear F8 Error code, whole system stop
running.
※
pd: High pressure value ps: Low pressure value
↓
Stop valve is OFF?
→
Open
NO
↓
Condenser and evaporator dirty block?
→
Clean
NO
↓
Pipe is flattened?
→
Re welding
NO
↓
Heating EXV is abnormal? Through check the
→
Replace EXV