Daikin FBQ71B7V3B x 2 - Page 53

Si20-701_B Symptom-based Troubleshooting
46
Is the level of
low pressure lower
than normal level?
YES
NO
Check the each
item.
• Refrigerant
overcharge
• Soiled heat
exchanger
• Short circuit of
discharge air
• Disturbing item
in airflow
• Defective
outdoor unit fan
motor (Refer to
troubleshooting
“E7”.)
Check the each
item.
• Insufficient
compression of
compressor
• Insufficient
circulation of
refrigerant
• Defective
electronic
expansion valve
A