Components; 4-Way Valve; Checking Procedures - Daikin FTXA20A Service Manual

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Components

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
Service manual
40
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
1 First perform a mechanical check of the 4-way valve, see
4
procedures" [ 40].
2 Unplug the 4-way valve connector from the appropriate PCB.
3 Measure the resistance of the 4-way valve coil between the pins of the 4-way
valve connector.
Result: The measured value must be 46 Ω ± 10%.
Is the measured value correct?
Yes
No
4
"2.14 Plate work" [ 120].
Action
Perform an electrical check of the 4‑way
valve, see "2.1.1 Checking
4
procedures" [ 40].
Fix or replace the 4‑way valve coil, see
"2.1.2 Repair procedures" [
Action
Continue with the next step.
Replace the 4‑way valve coil, see
"2.1.2 Repair procedures" [
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
4
43].
"2.1.1 Checking
4
43].
Split Stylish R32
ESIE18-03D – 2021.05