Specifications

Troubleshooting by Indication on the Remote Controller SiBE28-805
184 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Power ON
Power OFF
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
Check
whether or not
the power supply voltage
between L2 and N falls in
the range of 220 to
240VAC?
Is the type
(PC No.) of the fan
inverter correct?
The insulation
resistance is low (i.e., not
more than
100kΩ.)
The insulation
resistance is low (i.e., not
more than
1MΩ.)
F400U of the
A2P has been
molten.
Replace the noise
filter of the A2P.
Note) X3A: black
X4A: yellow
Disconnect the cable from the
compressor, and then check
the compressor for the
insulation resistance.
Disconnect the cable from the
fan, and then check the fan
motor for the insulation
resistance.
Check for connector connections: Remove and insert the connectors
shown below.
CMSQ-A7
[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
On-site cause.
Correct the wiring.
Mount the correct type
of fan inverter.
Replace the
compressor.
Replace the fan motor.
Replace the fan driver
PC board.
Are the fan
transmission wire
connectors (X3A: Black,
X4A: Yellow) wrongly
connected?
Connect the connectors
to the corresponding
color (black or yellow).
FAN1 FAN2
CMSQ200A7
PC0511-3 -
CMSQ250A7
PC0511-1 -
F400U
CMSQ-A7
A