Daikin ERQ, Service Manual

Page: 201 / 260

ESIE09-05 Troubleshooting by Indication on the Remote Controller
Troubleshooting 191
3.22 “
F6
” Outdoor Unit: Refrigerant Overcharged
Remote
Controller
Display
F6
Applicable
Models
ERQ 125 ~ 200 A7V1
Method of
Malfunction
Detection
Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature
during a check operation.
Malfunction
Decision
Conditions
When the amount of refrigerant, which is calculated by using the heat exchanging deicer
temperature during a check run, exceeds the standard.
Supposed
Causes
„ Refrigerant overcharge
„ Misalignment of the thermistor for heat exchanger
„ Defect of the thermistor for heat exchanger
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P232.
(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 heat exchanging deicer
thermistor in the piping.
Remove the heat exchanging
deicer thermister 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
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