![background image](http://html1.mh-extra.com/html/daikin/skyair-rzr-ta-series/skyair-rzr-ta-series_service-manual_3918999305.webp)
SiUS281811EA
Check
Part 6 Service Diagnosis
299
5.8 List of Inverter-Related Error Codes
CHECK 9
Code
Name
Condition for determining error
Major cause
C
ompressor current
L5
Instantaneous overcurrent of
inverter compressor
• Inverter output current exceeds 59.1 A
even instantaneously.
• Liquid sealing
• Defective compressor
• Defective inverter PCB
L8
Overcurrent of inverter
compressor
(Electronic superheating
protection sensor)
• Compressor overload running
A current of 33.5 A or more continues for a
period of consecutive 5 seconds or that of
27.6 A or more continues for a period of
consecutive 260 seconds.
• The inverter loses synchronization.
• Back-flow of compressor liquid
• Sudden changes in loads
• Disconnected compressor
wiring
• Defective PCB
Pro
tec
tion dev
ice an
d
ot
he
rs
E5
Inverter compressor lock
• The compressor is in the locked status
(does not rotate).
• Defective compressor
L1
Defective PCB (for inverter
compressor)
• No output is given.
• Defective heavy current part of
compressor
L4
Radiation fin temperature rise
• The radiation fin temperature reaches 87°C
(188°F) or more (while in operation).
• Defective fan
• Running in overload for an
extended period of time
• Defective PCB
L9
Defective startup of inverter
compressor
• The compressor motor fails to start up.
• Liquid sealing or defective
compressor
• Excessive oil or refrigerant
• Defective PCB
LC
Transmission error (between
microcomputers on the outdoor
main PCB)
• No communications are carried out across
the microcomputers on the outdoor main
PCB.
• Defective outdoor main PCB
P1
Imbalanced power supply
• Power supply voltages get significantly
imbalanced among three phases.
• Power supply error
(imbalanced voltages of 2% or
more)
• Defective PCB
• Dead PCB
P4
Defective radiation fin thermistor • The radiation fin thermistor gets short
circuited or open.
• Defective radiation fin
thermistor
U2
Power supply voltage error
• The inverter power supply voltage is high
or low.
• Power supply error
• Defective PCB
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...