Daikin SkyAir RZR-TA Series Service Manual page 230

Troubleshooting by Error Codes
4.9.2 Indoor Fan Motor Abnormality (FBQ-P Models)
A6
Error Code
Applicable FBQ-P
Models
Method of Error Error from the current flow on the fan PCB
Detection Error from the rotation speed of the fan motor in operation
Error from the position signal of the fan motor
Error from the current flow on the fan PCB when the fan motor starting operation
Error Decision  An overcurrent flows.
Conditions  The rotation speed is less than a certain level for 6 seconds.
 A position error in the fan rotor continues for 5 seconds or more.
Supposed
 Clogging of a foreign matter
Causes  Disconnection of the fan motor connectors (X1A and X2A)
 Disconnection of the connectors between the indoor unit main PCB (A1P) and fan PCB (A2P)
 Defective fan PCB (A2P)
 Defective fan motor
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SiUS281811EA
Part 6 Service Diagnosis