Jamestown Pellet Stove Temperature Sensor Switch 130F: 07FDE

Replacement F130-20 degree snap disc low limit switch for Jamestown J1000, J2000, and J3000 pellet stoves. The switch closes on rise (at 130F / 54.88C) and opens when cooled (to 110F / 43.68C) Low Limit switches supply power when their circuit is closed and cut the power when their circuit is open.

Replacement For Part Number:

• 07FDE

These are all of the confirmed compatible units for this product. This product may fit others, but these are the only ones we suggest ordering it for at this time.

Check these against the part you are replacing before ordering. If a dimension does not match, contact us and we will confirm the fit.

Troubleshooting Notes

Snap discs are used in a variety of ways and have many names, such as; Thermodiscs, Thermal switch, Bi-metal Switches, Fan Switches, Limit Switches, High Limit Switches, Low Limit Switches and Proof of Fire Switches. These switches have two or more wire terminals and inside the switch there is a disc that is coated with two dissimilar metals. Because all metals expand and contract at different temperatures, the surface tension of these metals together on a circular sheet of metal causes the disc to either have a convex or concave shape. Depending on which side of this disc is facing up toward the pin, the switch is either making a normally open or closed circuit at room temperature. When the switch detects heat, the metal on the disc will expand causing the disc to “flip” its convex or concave shape which allows the pin inside the switch to reverse its normally open or closed state. Bi-metal snap discs will automatically reset back to their normal state when enough of a temperature change is detected. Singular metal snap discs will have a button on the switch that must be manually pressed to reset the switch.

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