Refrigerant Shortage - Daikin SkyAir RZR-TA Series Service Manual

SiUS281811EA

4.47 Refrigerant Shortage

U0
Error Code
Applicable All outdoor units
Models
Method of Error Refrigerant shortage check is conducted based on the discharge pipe thermistor temperature and
Detection the low-pressure saturated temperature.
Error Decision
Microcomputer is used to determine and check for system refrigerant shortage.
∗The unit can keep operating but there is an unconfirmed error.
Conditions
Supposed
 Refrigerant shortage or refrigerant clogging (piping error)
Causes  Defective suction pipe thermistor
 Defective pressure sensor
 Defective outdoor main PCB (A1P)
Part 6 Service Diagnosis
Troubleshooting by Error Codes
275