F6" Outdoor Unit: Refrigerant Overcharged - Daikin CMSQ200A7W1B Service Manual

SiBE28-805
F6
3.20 " " Outdoor Unit: Refrigerant Overcharged
F6
Remote
Controller
Display
Applicable CMSQ200A7, 250A7
Models
Method of Excessive charging of refrigerant is detected by using the outside air temperature, heat
exchanging deicer temperature and liquid pipe temperature during a check run.
Malfunction
Detection
Malfunction When the amount of refrigerant, which is calculated by using the outside air temperature, heat
exchanging deicer temperature and liquid pipe temperature during a check run, exceeds the
Decision
standard.
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Refrigerant overcharge
Misalignment of the outside air thermistor
Misalignment of the heat exchanging deicer thermistor
Misalignment of the 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 temperature sensors of the
outside air thermistor, heat
exchanging deicer thermistor and
liquid pipe thermistor in the piping.
Are the
above thermistor
installed on pipes
correctly?
YES
Remove the outside air thermistor,
heat exchanging deicer thermister
and the liquid pipe thermistor from
the outdoor PC board and measure
resistance with a tester.
Is the
characteristic of the
above thermistor
normal?
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P.247.
Troubleshooting by Indication on the Remote Controller
NO
NO
Install thermistor correctly.
Replace thermistor.
Refrigerant overcharged.
165