Components; 4-Way Valve; Checking Procedures - Daikin RXTA30B2V1B Service Manual

4 |

Components

4 Components

4.1 4-way valve

4.1.1 Checking procedures

To perform a mechanical check of the 4-way valve
To perform an electrical check of the 4-way valve
Service manual
50
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" [ 50].
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 1787 Ω ± 10% (20°C)
Is the measured value correct?
Yes
No
4
"4.17 Plate work" [ 144].
Action
Perform an electrical check of the 4‑way
valve, see "4.1.1 Checking
4
procedures" [ 50].
Fix or replace the 4‑way valve coil, see
"4.1.2 Repair procedures" [
Action
Continue with the next step.
Replace the 4‑way valve coil, see
"4.1.2 Repair procedures" [
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
4
53].
"4.1.1 Checking
4
53].
ESIE21-12A – 2022.02