SiBE18-821_C Troubleshooting for Outdoor Unit
Troubleshooting 391
Troubleshooting
Note: Refer to page 326 for detail about monitor mode.
(Orange) 1
Measuring points
1 - 6
2 - 6
3 - 6
4 - 6
Judgment criteria
40~50 Ω
(Red) 2
(Yellow) 3
(Black) 4
5
COM[+] (Gray) 6
(R13022)
∗ Make measurement of resistance between the connector pins, and then make sure the resistance
falls in the range of 40 to 50 Ω.
YES
Turn power supply off, and
turn power supply on again.
The connector
of main PCB
(A1P) for electronic
expansion valve is
connected.
Replace the connecting cable.
Replace the main PCB (A1P).
YES
YES
NO
Ensure correct connection.
External factor other than
malfunction (for example,
noise etc.).
NO
The coil
resistance of electronic
expansion valve is normal.
(Refer to ∗1)
NO
Identify the defective
electronic expansion valve
(Y1E or Y3E) in monitor
mode. (See note.)
Return to normal?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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