This part is the Low Limit Switch F140 Ceramic for Whitfield Pellet Stoves
(This switch is not limited to any one system)
The Low Limit Switch's Function is to monitor the temperature of exhaust gases and is designed to shut down the stove if it does not sense the heat of the fire. Power loss to the Fuel Feed System will only stop the Auger Motor and pellet feed. The stoves Combustion and Room Air Blowers will still receive power until an exhaust temperature reading below 110°F.

The Low Limit switch can fail either in the OPEN or CLOSED position. Both failures have distinctive indications of failure. It's a surface mounted switch located on the throat of the Combustion Blower housing.
This normally OPEN switch is rated to close at 140 degrees F (+ / - 6 dg).
It resets to OPEN when temperatures drop below 110 degrees F (+ / - 5 dg).

• An OPEN failure is indicated by the inability of the stove to run longer than 30 min. The control board timer completes its cycle but the Low Limit switch fails to close when hot gases go undetected through the Combustion Blower housing exhaust. The stove restarts with the push of the START touch pad but shuts down again after 30 min.
• A CLOSED failure is indicated by the continuous fan operation after the stove’s fire has gone out and the stove is cool. By removing the power cord from the wall all fans stop but immediately start when the stove is plugged back in.

Both failures require the replacement of the switch.

Fits Whitfield Pellet Stoves:

• Advantage I
  Pellet, Freestanding & Insert, WP2
  MODEL YEARS:  1985 - 1989 (Serial # 1001 - 7400)
• Advantage II
  Pellet, Freestanding & Insert, WP2
  MODEL YEARS:  1989 - 1990 (Serial # 7401 - 18144)
• Advantage II-T & III
  Pellet, Freestanding & Insert, WP2
  ADVANTAGE II-T  MODEL YEARS:  1990 - 2000 (Serial # 18145 & up)
  ADVANTAGE III  MODEL YEARS:  1991 - 1996 (Serial # 18145 & up)
• Advantage II-T Classic
  Pellet, Freestanding & Insert, WP2
  MODEL YEARS:  2002 + (Serial # 75864 & up)
• Advantage Plus FREE STANDING & INSERT
  Pellet, Freestanding, WP7
  MODEL YEARS:  1996 - 2000
• Frontiersman (WF2) / Explorer (WF1)
  MODEL YEAR:  1989 - 1990 (Serial #1001 & Up)
• Legend (WP1)
  MODEL YEAR:  1984 - 1987 (Serial #1001 - 6177)
• Prodigy I & II WP3
  Pellet, Freestanding, WP3
  MODEL YEARS:  1990 - 1994 (Serial # 1001 & up)
• QUEST FREE STANDING & INSERT
  Pellet, Freestanding, WP4
  MODEL YEARS:  1994 - 2000
• QUEST PLUS FS
  Pellet, Freestanding, WP4
  MODEL YEARS:  1998 - 2000

(This switch is not limited to any one system)

Lennox part#12057601

SEARCH for parts with part numbers from the FREE Whitfield Pellet Stove Parts List.