Daikin RZQS100B7V3B [252/344] Check no

Daikin RZQS100B7V3B [252/344] Check no
SiBE27-702 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 239
Outdoor Unit: Checking the Expansion Valve
Checking To check the electronic expansion valve, proceed as follows:
Check No.2
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
correctly 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
The table below contains the reference resistance values.
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.
White Grey Black Yellow Red Orange
White —45 45
Grey —45 45
Black 45 90
Yellow 45 —90
Red 45 90
Orange 45 90
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 PC board A1P.

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