Troubleshooting by Remote Controller Si20-701_B
347
3.83
U0
Refrigerant Shortage
Remote Controller Display
U0
Applicable Models
RY-F, R(Y)-G/GA/KU/LU, RR-M
Method of Error Detection
Lack of gas is detected according to discharge pipe
temperature.
Error Decision Conditions
Micro-computer decides whether there is a refrigerant
shortage and detects error.
îš„ Stop due to error does not occur even though an error
is determined to have occurred.
Supposed Causes
îš„ Refrigerant shortage
îš„ Refrigerant piping circuit clogging
Troubleshooting
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is the
amount of
refrigerant correct?
NO
YES
Charge with the
proper amount of
refrigerant.
Check the
refrigerant piping
circuit for
clogging.
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