Refrigerant Overcharged - Daikin RMXS-L Series Service Manual

Troubleshooting for Outdoor Unit
7.8

Refrigerant Overcharged

F6
Error Code
Method of Error Excessive charging of refrigerant is detected during check operation by using outdoor temperature,
outdoor heat exchanger temperature, and liquid pipe temperature.
Detection
Error Decision When the amount of refrigerant, which is calculated during check operation by using outdoor
Conditions temperature, outdoor heat exchanger temperature, and liquid pipe temperature, exceeds the
standard.
Supposed
Causes
Troubleshooting
Check the mounting condition
of the outdoor temperature
thermistor, outdoor heat
exchanger thermistor, liquid
pipe thermistor.
Remove the outdoor
temperature thermistor,
outdoor heat exchanger
thermistor, liquid pipe
thermistor from the outdoor
PCB and measure the
resistance with a multimeter.
Refer to Thermistor Resistance/Temperature Characteristics table 1 on page 267.
236
Refrigerant overcharge
Incorrect installation of outdoor temperature thermistor, outdoor heat exchanger thermistor,
liquid pipe thermistor (R1T, R4T, R7T)
Defective outdoor temperature thermistor, outdoor heat exchanger thermistor, liquid pipe
thermistor (R1T, R4T, R7T)
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
Are the thermistors
installed on pipes
correctly?
YES
Is the
NO
characteristic of the
thermistors normal?
YES
SiUS181631EA
Install the thermistor
correctly.
Replace the defective
thermistor.
Correct the amount of
refrigerant.
(R22097)
Troubleshooting