Daikin Sensira Series, Руководство по обслуживанию

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2 | Components
Service manual
54
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
INFORMATION
After the check, remove the magnet from the expansion valve body and install the
expansion valve coil on the expansion valve body. Make sure that the expansion
valve coil is firmly slid onto the expansion valve body.
3 Slide the expansion valve magnet over the expansion valve body and gently
rotate the magnet clockwise/counterclockwise to manually close/open the
expansion valve.
INFORMATION
It is highly recommended to perform a power reset after checking the valve using a
magnet.
Does the expansion valve open? Action
Yes Perform an electrical check of the
expansion valve, see
"2.3.1 Checking
procedures" [
4
53].
No Replace the expansion valve body, see
"2.3.2 Repair procedures" [
4
56].
To perform an electrical check of the expansion valve
1 First perform a mechanical check of the expansion valve, see "2.3.1 Checking
procedures" [
4
53].
2 Disconnect the electrical connector of the expansion valve coil from the
appropriate PCB and measure the resistance of all windings (between the pins
of each phase (wire) and the common wire) using a multi meter. All
measurements MUST be approximately the same.
Name Symbol Location (PCB) Connector Winding
resistance
Main
expansion
valve Y1E Main S20 46±4 Ω
INFORMATION
Below is an example of the resistance measurements in which the common wire is
connected to pin 6 of the expansion valve coil connector. Connections may differ
according to the type of expansion valve.
▪ Connector pin 1‑6,
▪
Connector pin 2‑6,
▪ Connector pin 3‑6,
▪
Connector pin 4‑6.
a