Intelligent Thermal Sensor; Checking Procedures - Daikin Emura RXJ20A5V1B Service Manual

4 | Components

4.11 Intelligent thermal sensor

4.11.1 Checking procedures

To perform a power check of the intelligent thermal sensor
Service manual
114
a Fuse F1U
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 Carefully click the complete intelligent thermal sensor assembly out of the
indoor unit.
a Intelligent thermal sensor assembly
4 Measure the power supply voltage between the pins 1‑4 on the intelligent
thermal sensor connector S800.
Result: The measured voltage MUST be 4~6 V DC.
Is the measured power supply voltage
correct?
Yes
No
5 Measure the output voltage between between the pins 1‑4 on the connector
on the indoor unit main PCB.S600
Result: The measured voltage MUST be 4~6 V DC.
Action
No further actions required.
Return to "4.9.1 Checking
procedures" [
power PCB and continue with the next
procedure.
"4.14 Plate work" [
a
Action
Skip the next step.
Continue with the next step.
4
103] of the indoor unit
4
144].
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08