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4.5. TS04-S-ODU
Description: When the outdoor fan speed is to low or to high undeterminate amount of time, the LED displays the
failure code and the system turns off.
Possible Affected Components: Outdoor main PCB, fan motor, fan assembly or connection wires.
Troubleshooting and Repair:
NOTE: On various models the outdoor PCB can not be removed separately. In this situation the entire outdoor electric
control box should be replaced.
1. Outdoor DC Fan motor (control chip
is integrated with fan motor.
• Release the UVW connector. Measure the resistance of U-V, U-W and
V-W. If the resistance is not equal to each other, the fan motor must
have an issue and will need to be replaced or the PCB has the issue
and it must be replaced.
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