Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
143
2.29 Refrigerant Overcharged
Remote
Controller
Display
F6
Applicable
Models
RZR, RZQ
Method of Error
Detection
Excessive charging of refrigerant is detected by using the outdoor air temperature and heat
exchanger deicer temperature during check operation.
Error Decision
Conditions
When the amount of refrigerant, which is calculated by using the outdoor air temperature and
heat exchanging deicer temperature during check operation, exceeds the criteria.
Supposed
Causes
Refrigerant overcharge
Disconnection of outdoor air thermistor
Disconnection of heat exchanger deicer thermistor
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the mounting condition
of the outdoor air temperature
thermistor and heat exchanger
deicer thermistor in the piping.
Remove the outdoor air
temperature thermistor and heat
exchanger deicer thermistor from
the outdoor unit PCB and
measure resistance with a tester.
Rectify the overcharge of
refrigerant.
YES
NO
NO
Replace the thermistor.
Install the thermistor correctly.
YES
Are the above
thermistor installed on
pipes correctly?
Is the
characteristic of the
above thermistor
normal?
CHECK 5
CHECK 5
