Components; 4-Way Valve; Checking Procedures - Daikin Sensira Series Service Manual

2 Components

2.1 4-way valve

2.1.1 Checking procedures

To perform a mechanical check of the 4-way valve
To perform an electrical check of the 4-way 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
CAUTION
When replacing a component ALWAYS make sure the correct spare part for your unit
is installed.
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
DANGER: RISK OF BURNING/SCALDING
The coil gets hot while energized. Wait for it to cool down.
2 Verify that the screw is firmly fixing the coil to the valve body.
3 Check if any damage or burst is present.
Is the 4‑way valve coil firmly fixed and
not visually damaged?
Yes
No
Prerequisite: First perform a mechanical check of the 4-way valve, see
"2.1.1 Checking procedures" [
1 Unplug the 4-way valve connector from the appropriate PCB.
2 Measure the resistance of the 4-way valve coil between the pins of the 4-way
valve connector.
Result: The measured value must be:
Class
Class 20~42
Class 50~71
Is the measured value correct?
Yes
"2.10 Plate
Action
Perform an electrical check of the 4‑way
valve, see
procedures" [
Fix or replace the 4‑way valve coil, see
"2.1.2 Repair
4
37].
Resistance
560 Ω ± 5%
1787 Ω ± 10%
Action
Continue with the next step.
2 Components
|
4
work" [ 101].
"2.1.1 Checking
4
37].
4
procedures" [ 41].
Service manual
37