Expansion Valve; Checking Procedures - Daikin Comfora XP Series Service Manual

3.3 Expansion valve

3.3.1 Checking procedures

To perform a mechanical check of the expansion valve
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
a Compressor wire terminals cover
12 Install the compressor insulation, see
13 Perform a pressure test, see
14 Add refrigerant
4
procedures" [ 134].
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
"3.3.1 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 (if applicable) 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
"3.3.2 Repair procedures" [
2 Remove the expansion valve coil from the expansion valve body, see
"3.3.2 Repair procedures" [
a
"3.2.2 Repair
"4.2.1 Checking
to the refrigerant
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
4
63].
4
67].
4
67].
3 Components
|
4
procedures" [ 58].
4
procedures" [ 130].
circuit, see "4.2.2 Repair
4
"3.10 Plate work" [ 100].
Service manual
63