Daikin VRV III REYQ10PY1B, Service Manual

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SiBE37-701 Troubleshooting by Indication on the Remote Controller
Troubleshooting 287
3.21
“
F6
”
Outdoor Unit: Refrigerant Overcharged
Remote
Controller
Display
F6
Applicable
Models REYQ8P~48P
Method of
Malfunction
Detection 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
Decision
Conditions 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
standard.
Supposed
Causes
„
Refrigerant overcharge
„
Misalignment of the outside air thermistor
„
Misalignment of the heat exchanging deicer thermistor
„
Misalignment of the liquid pipe thermistor
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P437.
(V2797)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the
above thermistor
installed on pipes
correctly?
Check the mounting condition of
the temperature sensors of the
outside air thermistor, heat
exchanging deicer thermistor and
liquid pipe thermistor in the piping.
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?
Refrigerant overcharged.
YES
NO
NO
Replace thermistor.
Install thermistor correctly.
YES