Daikin Super Multi Plus E-Series Service Manual page 379

SiEN18-622
Troubleshooting
* Make measurement of resistance
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn power supply off, and
turn power supply on again.
Return to normal?
NO
Electronic
expansion valve is
connected to X21A and
X22A of outdoor unit
PC board
(A1P).
YES
Normal
when coil
check (*1) of the moving
part of the electronic
expansion valve is
checked.
YES
The connecting
cable is short-circuited
or disconnected.
NO
between the connector pins, and
then make sure the resistance
falls in the range of 40 tot 50Ω.
(Orange) 1
(Red) 2
(Yellow) 3
(Black) 4
5
(Gray) 6
YES
NO
NO
YES
Measuring points
1 - 6
2 - 6
3 - 6
4 - 6
Troubleshooting for Outdoor Unit
External factor other than
malfunction (for example,
noise etc.).
After connecting, turn the
power off and then back on
again.
Replace the moving part of
the electronic expansion
valve.
Replace the connecting cable.
Replace outdoor unit PC
board (A1P).
(V3067)
(V3067)
367