I had massage u-43 relay board I did replace it now is l60 cooling fan massage. How can I fix this.
You will want to test at the fan motor to ensure that you are getting 120 vac to it. If you are then the issue would be with the fan motor being defective. If there is not power to it work your way back to the control board and test to see if the control board is sending power to the fan. If there is power to the fan from the board then there would be a thermostat that is faulty and would need to be replaced.