Refrigerant Overcharged - Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

SiBE18-821_C
7.8

Refrigerant Overcharged

F6
Remote
Controller
Display
Method of Excessive charging of refrigerant is detected during check operation by using outdoor
Malfunction temperature, outdoor heat exchanger temperature, and liquid pipe temperature.
Detection
Malfunction When the amount of refrigerant, which is calculated during check operation by using outdoor
temperature, outdoor heat exchanger temperature, and liquid pipe temperature, exceeds the
Decision
standard.
Conditions
Supposed
Causes
Troubleshooting
Refer to "Thermistor Resistance / Temperature Characteristics" table 2 on page 427.
Troubleshooting
Refrigerant overcharge
Incorrect installation of outdoor temperature thermistor, outdoor heat exchanger thermistor,
liquid pipe thermistor
Defective outdoor temperature thermistor, outdoor heat exchanger thermistor, liquid pipe
thermistor
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the mounting condition
of the outdoor temperature
thermistor, outdoor heat
exchanger thermistor, liquid
pipe thermistor.
Are the thermistors
installed on pipes
correctly?
YES
Remove the outdoor
temperature thermistor,
outdoor heat exchanger
thermistor, liquid pipe
thermistor from the outdoor
PCB and measure the
resistance with a tester.
Is the
characteristic of the
thermistors normal?
YES
NO
NO
Troubleshooting for Outdoor Unit
Install the thermistor
correctly.
Replace the defective
thermistor.
Correct the amount of
refrigerant.
(R13024)
393