Troubleshooting by Error Code
SiAF332111E
326
Part 6 Service Diagnosis
Note(s)
5.68 System Abnormality, Refrigerant System Address
Undefined
Applicable
Models
All indoor unit models
All outdoor unit models
Error Code
UH
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.
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
Troubleshooting
1. RXQ4/5AR:
RESET (BS5)
RXMQ6-12AR:
RETURN (BS3)
Is
electricity
being introduced
for the first time after
installation or after an indoor
or outdoor unit main
PCB has been
replaced?
Does
an error
occur even after
12 minutes elapses
from the time when electricity
is introduced to indoor
and outdoor units?
Does a
UH
error occur for all
indoor units in the
system?
Is
indoor-outdoor unit
transmission
wiring normal?
NO
YES
YES
After fixing incorrect wiring,
press and hold the button (
1)
on the outdoor unit main PCB
for 5 seconds.
Normal
NO
YES
Normal
NO
Does an error occur?
NO
YES
NO
YES
Replace the indoor unit PCB.
Replace the outdoor unit main
PCB (A1P).
Press and hold the button
(
1) on the outdoor unit main
PCB for 5 seconds
The unit will not run for up to
12 minutes.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Содержание VRV S RXMQ10ARY1
Страница 1: ...Service Manual Cooling Only 50 60 Hz RXQ4 5ARV1 RXMQ6ARV1 RXMQ8 10 12ARY1 SiAF332111E...
Страница 349: ...SiAF332111E Check Part 6 Service Diagnosis 343 PCB and Circuit Diagram U V W L3B L2B L1B P1 P2 N32...
Страница 366: ...SiAF332111E 360 Part 7 Appendix 1 Wiring Diagrams 361 1 1 Outdoor Unit 361 1 2 VRV Indoor Unit 366 Part 7 Appendix...
Страница 369: ...SiAF332111E Wiring Diagrams Part 7 Appendix 363 RXMQ6ARV1 C 3D137051...
Страница 370: ...Wiring Diagrams SiAF332111E 364 Part 7 Appendix RXMQ8ARY1 C 3D137060...
Страница 371: ...SiAF332111E Wiring Diagrams Part 7 Appendix 365 RXMQ10 12ARY1 3D121610B...
Страница 375: ...SiAF332111E Wiring Diagrams Part 7 Appendix 369 FXMQ40 50 63 80 100ARV1 3D127112 04 59...
Страница 376: ...Wiring Diagrams SiAF332111E 370 Part 7 Appendix 1 2 4 Wall Mounted FXAQ20 25 32PVE FXAQ40 50 63PVER1 C 3D076498B...