SiUS281811EA
Troubleshooting by Error Codes
Part 6 Service Diagnosis
229
Reference
4.12 Low Indoor Airflow
Error Code
A6-21
Applicable
Models
FTQ-TA
Outline
Error is issued if the indoor unit determines that the indoor fan motor rotation is insufficient,
regardless of the rotation command from indoor unit.
Error Decision
Conditions
Determining successive abnormalities
Checks the rotation speed at 5-second intervals using the feedback of the fan motor.
If that figure exceeds 50 rpm and falls below 150 rpm 10 times successively, it is deemed
abnormal operation.
If, during operation, the rotation command is stopped, the 5-second interval check is halted and
the counted number will be cleared.
Determining long-term abnormalities
Checks the rotation speed at 5-second intervals using the feedback of the fan motor.
Performs rotation sampling 720 times (takes approx. one hour), and if the rotation speed
exceeds 50 rpm and falls below 150 rpm over 360 times, it is deemed abnormal operation.
When the counter reaches 720 times, the counted number will be cleared and the 720 times
sampling restarts.
If, during this, the rotation command is stopped, the 5-second interval check is halted, but the
counted number will be kept.
When the rotation command is restarted, the checks will resume.
Error Reset
Conditions
Determining successive abnormalities
Checks the rotation speed at 5-second intervals using the feedback of the fan motor.
If that figure exceeds 150 rpm even once, the error will be cleared.
Determining long-term abnormalities
Checks the rotation speed at 5-second intervals using the feedback of the fan motor.
If that figure exceeds 150 rpm 36 times successively, the error will be cleared.
At that point, the counted number and sampling number will be cleared, and the 720 times
sampling starts again from the beginning.
Supposed
Causes
Fan or motor obstruction
Blocked filters
Restrictive ductwork or ductwork undersized
Wiring disconnected
Wrong outdoor and indoor combination
Indoor fan motor failure
Corrective
Actions
Check for obstruction on the fan or motor.
Check ductwork and filter for blockage.
Clean filters.
Remove obstruction. Verify all registers are fully open.
Check the connections and the rotation of the motor.
Verify the input voltage at the motor.
Verify ductwork is appropriately sized for system. Resize or replace ductwork if needed.
Replace motor.
CHECK 19
Refer to page 311.
Содержание SkyAir RZR-TA Series
Страница 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
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...