Expansion Valve; Checking Procedures - Daikin Sensira Series Service Manual

2.3 Expansion valve

2.3.1 Checking procedures

To perform a mechanical check of the expansion valve
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
a Compressor wire terminals cover
9 Add refrigerant
4
procedures" [ 133].
10 Install the compressor insulation, see
Is the problem solved?
Yes
No
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Power OFF the unit for 3 minutes. Then turn ON the unit and listen to
the expansion valve assembly. If the expansion valve does NOT make a latching
sound, continue with the electrical check of the expansion valve, see
"2.3.1 Checking procedures" [
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Remove the expansion valve insulation and visually check:
▪ For oil drops around the expansion valve. Locate and fix as necessary.
▪ Pipes for signs of damage. Replace pipes as needed.
▪ Coil wires for signs of damage. Replace expansion valve coil as needed. See
"2.3.2 Repair procedures" [
2 Remove the expansion valve coil from the expansion valve body, see
"2.3.2 Repair procedures" [
a
to the refrigerant
"2.2.2 Repair
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4
53].
4
56].
4
56].
2 Components
|
circuit, see "3.2.2 Repair
4
procedures" [ 49].
4
"2.10 Plate work" [ 101].
Service manual
53