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... flowchart continued from previous page
Some power wires or communication
wires of fan module are not connected
The fan motor is blocked or has failed
The power supply is abnormal
Voltage between P and N on fan module
Replacing the fan module resolves the
Replace outdoor main PCB
Notes:
1.
Fan module address is set through dial switch S7 on the fan module. The fan module location refers to the wiring diagram.
2.
The normal voltage between P and N on the fan module is 310V DC.
properly
No
No
No
is abnormal
2
No
error
No
S7 on fan module
ON
1 2 3
ON
1 2 3
Figure 6-2.12: Fan module P N terminals
Ensure power and communication wires
Yes
are connected properly
Remove obstruction or replace the fan
Yes
Yes
Check the power supply equipment
Yes
Replace AC filter board
Fan module address
1 for master fan module
2 for slave fan module
121
motor
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