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
1MΩ.)
F400U
of the A2P has
been molten.
YES
NO
NO
YES
Replace the fan
motor.
Replace the fan
driver PCB.
Power
OFF
A
B
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