Carrier VFD problems?
another carrier VFD failed, or is it? blower was not running on arrival, and I suspect the drive had a fault. I did not verify this and then found the fuses not blown. on reset, the drive started and ran. I decided in the end to bypass the drive to prevent another problem and wire in a contactor to control the motor.
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HVAC TROUBLESHOOTING THIS CARRIER RTU HAD....
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