F6" Refrigerant Overcharged - Daikin VRV III-S RXYMQ36 48PVJU Service Manual

SiUS34-907
F6
3.20 " " Refrigerant Overcharged
F6
Remote
Controller
Display
Applicable RXYMQ36 · 48PVJU
Models
Method of
Excessive charging of refrigerant is detected by using the outside air temperature, heat exchanging
Malfunction deicer temperature and liquid pipe temperature during a check run.
Detection
Malfunction
When the amount of refrigerant (calculated by using the outside air temperature), heat exchanging
Decision deicer temperature, and liquid pipe temperature exceed the standard during a check run.
Conditions
 Refrigerant overcharge
Supposed
 Misalignment of the outside air thermistor
Causes
 Misalignment of the heat exchanging deicer thermistor
 Misalignment of the liquid pipe thermistor
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Check the mounting condition of the
temperature sensors of the outside air
thermistor, heat exchanging deicer
thermistor, and liquid pipe thermistor
in the piping.
installed on pipes
Remove the outside air thermistor,
heat exchanging deicer thermistor,
and the liquid pipe thermistor from the
outdoor PCB and measure resistance
with a tester.
characteristic of the
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P.241.
Troubleshooting
Are the
above thermistor NO
correctly?
YES
Is the
NO
above thermistor
normal?
YES
Troubleshooting by Indication on the Remote Controller
Install the thermistor (R1T, R4T,
R7T) correctly.
Replace the thermistor (R1T,
R4T, R7T).
Rectify the overcharge of
refrigerant.
145