Question about Roper Dryers
Converted from 4 prong to 3 prong. it will not start
Your dryer requires 120 for motor operation. It only needs 240 volts for heater operation. Since the motor is 120 volts it is on a different circuit than that of the heat. On your terminal block is a white wire in the middle, that is neutral and it is needed to drive the motor. On either side is a black wire and a red wire. The motor runs on the white and black circuit. The heater circuit runs on red and black.
The motor circuit has a fuse in it mounted on the blower wheel next to the control klixon. If it is open the motor will not operate just as the door was open, door switch is also on the motor circuit. The motor has to be operating for the heat to come on also because the heater wires go through the motors centrifugal switch.
Posted on Dec 31, 2012
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Posted on Jan 02, 2017
The following link explains how to convert your appliance from a 3-prong to a 4-prong power cord:
I hope this helps you. Let me know if you still have questions.
Posted on Nov 11, 2008
Always disconnect electricity before beginning this process.
All the 4 wire cords I have seen are color-coded. The white wire goes to the middle terminal, the green wire goes to any screw you can reach that goes into the metal case of the dyer. The red and black go to the outside terminals of the block and while it doesn't matter which color goes to which terminal I usually follow the color code of the interior dryer wiring that already exists. Good Luck.
Posted on Oct 04, 2009
SOURCE: changing dryer plug
These two pictures illustrate the power wiring on a the terminal of an electric dryer. The one on top is the old-style three-wire configuration. Most people have this type in their homes. New code changes, though, require that dryers now have a four-wire cord, shown on the bottom.
Besides the number of wires in each cord, there are two important things to notice. First, in the four-wire configuration, notice that the dryer's grounding strap is folded back on itself. The whole point of the four-wire cord is to separate the ground from the neutral. The green wire (the "new" extra wire in the four-wire cord) is attached to the dryer cabinet. In the three-wire configuration, the grounding strap is left intact and the neutral and ground are tied together.
Sure hope this helps you find a resolution to your delimma! Best wishes.
Posted on Oct 07, 2009
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