U0 Refrigerant Shortage - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
U0
3.83
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.
Stop due to error does not occur even though an error
is determined to have occurred.
Supposed Causes
Refrigerant shortage
Refrigerant piping circuit clogging
Troubleshooting
Caution
Is the
amount of
refrigerant correct?
YES
Refrigerant Shortage
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
Si20-701_B
Charge with the
proper amount of
refrigerant.
Check the
refrigerant piping
circuit for
clogging.
347