Hall Ic Check - Daikin FVKS25BVMB Service Manual

Checks
<Measuring positions>
MULTIMETER
(DC, VOLTAGA RANGE)
5.1.13

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
112
DB1
TRM1
S90 THERMISTOR LEAD WIRE
COMPRESSOR LEAD WIRE
∗
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.
S80 FOUR WAY VALVE LEAD WIRE (Heating Pump only)
Replace the PCB.
Replace the fan motor.
Si06-305
S70 FAN MOTOR LEAD WIRE
REACTOR LEAD WIRE
(R2956)
Service Diagnosis