Daikin RMXS-L Series Service Manual page 200

Troubleshooting for Outdoor Unit
Troubleshooting
 1. Make measurement of resistance between the connector pins, and then make sure the
Note: Refer to page 139 for detail about monitor mode.
191
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn power supply off, and
turn power supply on again.
Return to normal?
NO
Identify the defective
electronic expansion valve
(Y1E or Y3E) in monitor
mode. (See note.)
The connector
of main PCB
(A1P) for electronic
expansion valve is
connected.
YES
The coil
resistance of electronic
expansion valve is normal.
(Refer to ∗1.)
YES
resistance falls in the range of 40 to 50 .
X21A, X22A
(Y1E, Y3E)
(Orange) 1
(Red) 2
(Yellow) 3
(Black) 4
(Gray) 5
COM + (White) 6
YES
NO
NO
Measuring points Judgment criteria
1 - 6
2 - 6
3 - 6
4 - 6
Could be other causes than
malfunction (for example,
noise etc.).
Ensure correct connection.
Replace the connecting cable.
Replace the main PCB (A1P).
40 ~ 50 Ω
SiUS181305E
(R15633)
(R15616)
Troubleshooting