Table of Contents
ESIE13-02A
6.2
Check No.2 - Outdoor Unit: Checking the Expansion Valve
Checking
To check the electronic expansion valve, proceed as follows:
Step
1
2
3
4
5
6
Action
Check if the expansion valve connector is correctly inserted in the X12A of A1P.
Compare the expansion valve unit with the number of the connector to make sure it is cor-
rectly connected.
Switch the power OFF.
Switch the power ON to check whether the expansion valve is producing a clicking sound.
If...
The expansion valve has no clicking
sound
Check the coil current: Open circuit < normal < short circuit
The table below contains the reference resistance values.
White
Grey
White
Grey
Black
45
Yellow
45
Red
45
Orange
45
Check the clicking sound again.
If...
There is a clicking sound
There is no clicking sound
There is still no clicking sound
151
Additional Checks for Troubleshooting
Then...
Disconnect the valve connector without the
clicking sound and proceed to step 5.
Black
Yellow
45
45
90
90
Then...
The expansion valve works properly.
Replace the expansion valve unit.
Replace outdoor PCB A1P.
Red
Orange
45
45
90
90
Part 4 Troubleshooting
4
3
4
4
5
Chapters
Table of Contents
Troubleshooting
