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SiUS281811EA
Troubleshooting by Error Codes
Part 6 Service Diagnosis
291
Note(s)
4.59 System Abnormality, Refrigerant System Address
Undefined
Error Code
UH
Applicable
Models
All indoor units
All outdoor units
Method of Error
Detection
System detects an indoor unit whose address is not defined by automatic address function.
∗
Automatic address refers to the automatic designated address of indoor unit and outdoor unit
when connected to the power after installation or wiring replacement (with the
RESET (BS5)
button pressed for more than 5 seconds).
Error Decision
Conditions
The error decision is made as soon as the abnormality aforementioned is detected.
Supposed
Causes
Improper connection of transmission wiring between indoor-outdoor units
Defective indoor unit PCB
Defective outdoor unit main PCB (A1P)
Troubleshooting
∗
1. Refer to installation manual for correct "indoor unit and outdoor unit connection wiring".
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
YES
YES
After fixing incorrect wiring,
press and hold the
RESET
(BS5)
button on the outdoor
unit main PCB for 5 seconds.
The unit will not run for up to
12 minutes.
Normal.
NO
NO
Does a
UH
error
occur for all indoor
units in the system?
YES
NO
YES
Replace the indoor unit PCB.
Replace the outdoor unit main
PCB (A1P).
Press and hold the
RESET
(BS5)
button on the outdoor
unit PCB for 5 seconds
Does
an error
occur even after
12 minutes elapses
from the time when
electricity is introduced
to indoor and
outdoor
units?
Is
electricity
being introduced
for the first time after
installation or after an indoor
or outdoor unit main
PCB has been
replaced?
Is indoor-outdoor unit
transmission wiring
normal? (
1)
Содержание SkyAir RZR-TA Series
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Страница 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Страница 321: ...SiUS281811EA 315 Part 7 Appendix 1 Wiring Diagrams 316 1 1 Outdoor Unit 316 1 2 Indoor Unit 320 Part 7 Appendix...
Страница 322: ...Wiring Diagrams SiUS281811EA 316 Part 7 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RZR18 24TAVJU RZQ18 24TAVJU 3D115455...
Страница 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Страница 324: ...Wiring Diagrams SiUS281811EA 318 Part 7 Appendix RZR30 36 42 48TAVJU RZQ30 36 42 48TAVJU 3D115456...
Страница 325: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 319 RZR30 36 42 48TAVJUA RZQ30 36 42 48TAVJUA 3D124500...
Страница 326: ...Wiring Diagrams SiUS281811EA 320 Part 7 Appendix 1 2 Indoor Unit FCQ18 24 30 36 42 48TAVJU 3D115647A...
Страница 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Страница 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Страница 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...