Quote:
Originally Posted by WeBeFulltime
The return vent pvc mod is done on the inside (ceiling) not on the outside unit. Remove the grills on the returns (2 for each A/C) and insert the pvc pipe. Be sure to smooth the edges of the pipe before inserting so they don't damage the inside of the duct.
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Robert that is your Ice Sensor and is mounted in the correct area of your Evaporator Coil