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Troubleshooting by Remote Controller
Si20-701_B
319
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.
<Example> 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
Replace the noise
filter of the A2P.
CMSQ-A7
F400U
Note) X3A: black
X4A: yellow
The
insulation
resistance is low (i.e., not
more than
1M
Ω
.)
F400U
of the A2P has
been molten.
YES
NO
NO
YES
Replace the fan
motor.
Replace the fan
driver PCB.
Power
OFF
A
B