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,
Detection outdoor heat exchanger temperature, and liquid pipe temperature.
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.
 Refrigerant overcharge
Supposed
 Incorrect installation of outdoor temperature thermistor, outdoor heat exchanger thermistor,
Causes
 Defective outdoor temperature thermistor, outdoor heat exchanger thermistor, liquid pipe
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 tester.
Refer to Thermistor Resistance / Temperature Characteristics table 1 on page 224.
193
liquid pipe thermistor (R1T, R4T, R7T)
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
SiUS181305E
Install the thermistor
correctly.
Replace the defective
thermistor.
Correct the amount of
refrigerant.
(R13024)
Troubleshooting