Components; 4-Way Valve; Checking Procedures - Daikin Stylish 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
(C)(F)TXA15~50A(W)(S)(T) + (C)(F)TXA15~50B(B)(S)(T) + RXA42+50A +
RXA20~35A + RXA42+50B
Split Stylish R32
ESIE18-03C – 2020.02
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.
Prerequisite: Remove the required plate work, see
1 Verify that the screw is firmly fixing the coil to the valve body.
2 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 46 Ω ± 10%.
Is the measured value correct?
Yes
No
When outdoor temperature is mild and unit can switch between heating and
cooling
INFORMATION
This procedure is ONLY possible when the outdoor temperature is within the
temperature range for both Heating and Cooling operation mode. See the
databook on Business Portal for the temperature range of the operation modes.
3 Connect the 4‑way valve connector to the appropriate PCB.
4 Turn ON the power using the respective circuit breaker.
5 Activate Heating operation via the user interface.
"2.13 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
39].
Action
Continue with the next step.
Replace the 4‑way valve coil, see
"2.1.2 Repair
2 Components
|
4
work" [ 99].
"2.1.1 Checking
4
39].
4
procedures" [ 42].
4
procedures" [ 42].
Service manual
39