Daikin RZQ71~125B7V3B, Руководство по обслуживанию, Страница: 301 / 484

ESIE04-01 Additional Checks for Troubleshooting
Part 3 – Troubleshooting 3–101
3 3
4
5
1
5.5 Outdoor Unit: Checking the Expansion Valve
Checking To check the electronic expansion valve, proceed as follows:
Step Action
1 Check if the expansion valve connector is correctly inserted in the X12A of A1P.
2 Compare the expansion valve unit with the number of the connector to make sure it is cor-
rectly connected.
3 Switch the power OFF.
4 Switch the power ON to check whether the expansion valve is producing a clicking sound.
5 Check the coil current: Open circuit < normal < short circuit
6 Check the clicking sound again.
If... Then...
The expansion valve has no
clicking sound Disconnect the valve connector without the
clicking sound and proceed to step 5.
The table below contains the reference resistance values.
—
White Grey Black Yellow Red Orange
White — 45
ø
45
ø
Grey — 45
ø
45
ø
Black 45
ø
— 90
ø
Yellow 45
ø
— 90
ø
Red 45
ø
90
ø
—
Orange 45
ø
90
ø
—
If... Then...
There is a clicking sound The expansion valve works properly.
There is no clicking sound Replace the expansion valve unit.
There is still no clicking sound Replace outdoor PCB A1P.
RZQ - Final.book Page 101 Wednesday, September 8, 2004 8:40 AM