Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 140

SiBE26-701
Troubleshooting
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 outdoor unit
PC board(A1P).
YES
Is the
coil resistance of
electronic expansion valve
normal? (135Ω~165Ω)
(∗1)
NO
∗Make measurement of resistance
between the connector pins, and
then make sure the resistance
falls in the range of 135 ~ 165Ω.
(Orange) 1
(Red) 2
(Yellow) 3
(Black) 4
5
COM [+] (Gray) 6
YES
NO
YES
Measuring points
1 - 6
2 - 6
3 - 6
4 - 6
Diagnosis by Remote Controller
External factor other than
malfunction (for example, noise
etc.).
Connect correctly.
Replace the electronic expansion
valve.
Replace outdoor unit PC board
(A1P).
Criteria
40 ~ 50Ω
(V3067)
(V3067)
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