Humidity Sensor; Checking Procedures - Daikin FTXA20A Service Manual

2 | Components

2.6 Humidity sensor

2.6.1 Checking procedures

To perform a power check of the humidity sensor
Service manual
70
3 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
4 Wrap a wet rag around the high pressure switch and any other components
near the high pressure switch and solder the high pressure switch pipe to the
refrigerant pipe.
a
c
a High pressure switch
b Faston connector
c High pressure switch pipe
CAUTION
Overheating the pressure switch will damage or destroy it.
5 After soldering is done, stop the nitrogen supply after the component has
cooled‑down.
6 Connect the Faston connectors to the high pressure switch.
7 Perform a pressure test, see
8 Add refrigerant
4
procedures" [ 162].
Is the problem solved?
Yes
No
1 As there is no specific check procedure for this component, first perform a
check of the indoor unit main PCB to check if the humidity sensor needs to be
replaced. See "2.8.1 Checking
Prerequisite: Stop the unit operation via the user interface.
b b
"3.2.1 Checking
to the refrigerant
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4
procedures" [
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
4
procedures" [ 158].
circuit, see "3.2.2 Repair
75].
RXA20~35A(9) + RXA42+50B
ESIE18-03D – 2021.05
Split Stylish R32