SiUS331604E
Troubleshooting by Error Code
Service Diagnosis
152
4.10 Drain Level Above Limit
Error Code
AF
Applicable
Models
FXFQ, FXZQ, FXDQ, FXMQ
Method of Error
Detection
Water leakage is detected based on float switch ON/OFF operation while the compressor is not in
operation.
Error Decision
Conditions
When the float switch changes from ON to OFF while the compressor is not in operation.
∗
Error code is displayed but the system operates continuously.
Supposed
Causes
Humidifier unit (optional accessory) leaking
Defective drain piping (upward slope, etc.)
Defective indoor unit main PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Defective indoor unit main
PCB (A1P).
Modify the drain piping.
YES
NO
NO
YES
Check if the humidifier unit is
leaking.
Field drain
piping has a defect such
as upward sloping.
A
humidifier unit
(optional accessory) is installed
on the indoor unit.
Summary of Contents for VRV IV-S RXTQ-TAVJU Series
Page 1: ...Service Manual SiUS331604E RXTQ36 48 60TAVJU Heat Pump 60 Hz...
Page 254: ...Wiring Diagrams SiUS331604E 241 Appendix RXTQ48TAVJU 3D100496A...
Page 255: ...SiUS331604E Wiring Diagrams Appendix 242 RXTQ60TAVJU 3D100497A...
Page 260: ...Wiring Diagrams SiUS331604E 247 Appendix FXEQ07 09 12 15 18 24PVJU C 3D098557...
Page 267: ...SiUS331604E Wiring Diagrams Appendix 254 FXTQ12 18 24 30 36 42 48 54PAVJU 3D065036G...
Page 270: ...Wiring Diagrams SiUS331604E 257 Appendix VAM1200GVJU 3D073270C...
Page 271: ...Revision History Month Year Version Revised contents 06 2016 SiUS331604E First edition...
