Refrigerant Overcharged - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller

2.12 Refrigerant Overcharged

F6
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error Excessive charging of refrigerant is detected by using the outdoor air temperature, heat
exchanger deicer temperature and liquid pipe temperature during check operation.
Detection
Error Decision When the amount of refrigerant, which is calculated by using the outdoor air temperature, heat
exchanger deicer temperature and liquid pipe temperature during check operation, exceeds the
Conditions
criteria.
Supposed
Causes
Troubleshooting
122
Refrigerant overcharge
Disconnection of outdoor air thermistor
Disconnection of heat exchanger deicer thermistor
Disconnection of liquid pipe thermistor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the mounting condition of
the outdoor air thermistor, heat
exchanger deicer thermistor and
liquid pipe thermistor in the piping.
Are the above
thermistor
installed on pipes
correctly?
YES
Remove the outdoor air thermistor,
heat exchanger deicer thermistor
and the liquid pipe thermistor from
the outdoor unit PCB and measure
resistance with a tester.
CHECK 11
Is the
characteristic of
the above
thermistor normal?
YES
CHECK 11 Refer to P.189
NO
NO
SiBE341027
Install the thermistor correctly.
Replace the thermistor.
Rectify the overcharge of
refrigerant.
Service Diagnosis