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SiUS281811EA
Troubleshooting by Error Codes
Part 6 Service Diagnosis
275
4.47 Refrigerant Shortage
Error Code
U0
Applicable
Models
All outdoor units
Method of Error
Detection
Refrigerant shortage check is conducted based on the discharge pipe thermistor temperature and
the low-pressure saturated temperature.
Error Decision
Conditions
Microcomputer is used to determine and check for system refrigerant shortage.
∗
The unit can keep operating but there is an unconfirmed error.
Supposed
Causes
Refrigerant shortage or refrigerant clogging (piping error)
Defective suction pipe thermistor
Defective pressure sensor
Defective outdoor main PCB (A1P)
Summary of Contents for SkyAir RZR-TA Series
Page 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
Page 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Page 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Page 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Page 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Page 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...