Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 163

Diagnosis by Remote Controller
Troubleshooting
Power ON
Power OFF
152
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Are the fan
transmission wire
connectors (X3A: Black,
X4A: Yellow) wrongly
connected?
YES
Check
whether or not
the power supply voltage
between L2 and N falls in
the range of 220 to
240VAC?
YES
Is the type
(PC No.) of the fan
inverter correct?
YES
Disconnect the cable from the
compressor, and then check
the compressor for the
insulation resistance.
NO
The insulation
resistance is low (i.e., not
more than
100kΩ.)
NO
Disconnect the cable from the
fan, and then check the fan
motor for the insulation
resistance.
NO
The insulation
resistance is low (i.e., not
more than
1MΩ.)
NO
Check for connector connections: Remove and insert the
connectors shown below.
[Fan 1]
• A1P X28A ⇔ X6A A3P
• A1P X20A ⇔ X4A A3P
• A3P X61A ⇔ X402A A2P
• A3P X1A ⇔ X403A A2P
• A3P X5A ⇔ X5A A4P
• A3P X41A ⇔ X3A A4P
• A4P X4A Short connector
F400U of the
A2P has been
molten.
NO
A
NO
NO
NO
YES
YES
YES
Replace the noise
filter of the A2P.
A2P
SiBE26-701
Connect the connectors
to the corresponding
color (black or yellow).
On-site cause.
Correct the wiring.
Mount the correct type
of fan inverter(PC0511
-1).
Replace the
compressor (M1C).
Replace the fan motor
(M1F).
Replace the fan driver
PC board (A4P).
F400U
Troubleshooting