Daikin E-Series Service Manual page 259

Check
6.1.15 Hall IC Check
Check No.16 1. Check the connector connection.
2. With the power ON, operation OFF, and the connector connected, check the following.
Failure of (1)
Failure of (2)
Both (1) and (2) result
The connector has 3 pins, and there are two patterns of lead wire colors.
248
∗
Output voltage of about 5 V between pins 1 and 3.
∗
Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.
faulty PCB
faulty Hall IC
Replace the PCB.
Replace the PCB.
Replace the fan motor.
SiBE12-817
Service Diagnosis