Daikin RZQ100B8V3B Service Manual page 218

Error Codes: Outdoor Units
1
Troubleshooting
3 3
4
5
Caution
3–70
Turn the power supply
off once and back on.
Normal reset?
NO
Is the
electronic
expansion valve coil
connected to outdoor unit
PC board?
YES
With
remote controller
ON, doesn't the unit
operate and is "E9"
displayed?
NO
Is there
difference in
temperature before and
after solenoid valve
(Y2S) during
operation?
NO
∗ Measure the resistance between each pin of
connector and make sure that the resistance ranges
between 40 and 50Ω.
1
2
3
4
5
6
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
YES
NO
YES
Is coil
resistance of
electronic expansion valve
normal? (40 to 50Ω)
(∗)
YES
Measurement point
1—5
2—5
3—5
4—5
ESIE05-03
Problem could be caused by
external factor (noise, etc.)
other than malfunction.
Connect correctly.
Replace the motorized
valve coil.
Replace the main unit of
solenoid valve (Y2S).
NO
Replace the electronic
expansion valve coil.
Replace the outdoor unit
PC board (A1P).
Part 3 – Troubleshooting