Humidity Sensor; Checking Procedures - Daikin Emura RXJ20A5V1B Service Manual

4 | Components

4.7 Humidity sensor

4.7.1 Checking procedures

To perform a power check of the humidity sensor
Service manual
98
Is the problem solved?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
2 Turn ON the power of the unit.
3 Measure the power supply voltage between the pins 1‑4 on the humidity
sensor connector CN.
Result: The measured voltage MUST be 5 V DC.
a Humidity sensor (PCB)
Is the measured power supply voltage
correct?
Yes
No
4 Measure the output voltage between between the pins 1‑4 on the connector
S600 on the indoor unit main PCB.
Result: The measured voltage MUST be 5 V DC.
Is the output voltage on the indoor unit
main PCB correct?
Yes
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"4.14 Plate
a
Action
Skip the next step..
Continue with the next step.
Action
Replace the humidity sensor wiring
harness, see
procedures" [
4
work" [ 144].
"4.7.2 Repair
4
99].
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08