Refrigerant Overcharged - Daikin VRV X RXQ6-48ANR Series Service Manual

Troubleshooting by Error Code

5.32 Refrigerant Overcharged

Applicable All outdoor unit models
Models
F6
Error Code
Method of Error Detect overcharged refrigerant according to outdoor air temperature, heat exchanger liquid pipe
Detection temperature, and subcooling heat exchanger liquid pipe temperature during test operation.
Error Decision
When the amount of refrigerant, which is calculated using outdoor air temperature, heat
Conditions exchanger liquid pipe temperature, and subcooling heat exchanger liquid pipe temperature
during test operation, exceeds the regular charge amount by 30% or more
(If refrigerant is charged slightly over the regular charge amount, F6 may be displayed on the
remote controller.)
Supposed
 Refrigerant overcharged
Causes  Disconnection of outdoor air thermistor
 Disconnection of heat exchanger liquid pipe thermistor
 Disconnection of subcooling heat exchanger liquid pipe thermistor
Troubleshooting
Reference
CHECK 11 Refer to page 269.
208
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check for the conditions of
mounting of the temperature
sensors of the outdoor air
thermistor, the heat exchanger
liquid pipe thermistor, and
subcooling heating exchanger
liquid pipe thermistor to the piping.
Are the temperature
sensors properly
mounted?
YES
Disconnect the outdoor air
thermistor, the heat exchanger
liquid pipe thermistor, and
subcooling heating exchanger
liquid pipe thermistor from the
outdoor unit main PCB, and
then make measurement of
resistance using a multimeter.
CHECK 11
Normal?
YES
NO
NO
SiME341909EA
Properly connect the thermistors,
and then operate the system.
Replace abnormal thermistors,
and then operate the system.
Remedy refrigerant overcharging.
Part 6 Service Diagnosis