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Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
226
Troubleshooting
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
Ω
45
Ω
Grey
—
45
Ω
45
Ω
Black
45
Ω
—
90
Ω
Yellow
45
Ω
—
90
Ω
Red
45
Ω
90
Ω
—
Orange
45
Ω
90
Ω
—
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.
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...