Does anyone have any idea why a tech would take out txv bulb from inside the air handler unit, and mount it outside the unit on the suction line, claiming that it would help repair a problem of the heat pump not Dehumidifiing?

In this case I was told that the coil on the inside air handler was dry and it was not suppose to be. That placing the TXV bulb outside the air handler in a new location would fix that problem.

If this bulb is to blame is it letting too much Freon get in? or not enough Freon getting in?

There was mention about moving the bulb to a warmer spot, Does that restrict the amount of freeon? or increases the flow? Why would the suction line be considered a "warmer" spot?

The txv bulb normally sits on the internal part of the suction line does it not?