Carrier 38VMA Series - Page 63

Caution: Turn off the power switch before connecting or disconnecting the connector. Failure to do so could damage
the board.
Switch on the power to check
whether the fan begins to run or not. Check
whether the red indicator LED2 of fan board is
lighted or not
NO
YES
Switch on the power
to check whether the fan
begins to run or not. See if
the red indicator LED2 of
fan board is lighted or not
NO
Replace
the motor
YES
Replace the
fan board
After the fan
runs for ten seconds,
check to see if the red
indicator LED2 of fan
board is lighted or not
YES
Replace the
power circuit
of fan board
NO
check
whether after the fan
runs for thirty
seconds to one minute,
the red indicator
LED2 of fan board
is lighted and there
is fault P9
YES
Replace the
Main board
NO
Normal
5
6
4
3
2
1
1. Motor signal feedback port
2. Power supply indicator lamp
3. Fan motor U, V, W output port
4. Error indicating lamp
5. PCB control signal input port
6. Program input port
* The normal value of output voltage
between P and N terminal on fan module is
DC 310V for 208-230V ODU.
NOTE: 208/230V 3Ph 60Hz
63