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.It resets to OPEN when temperatures drop below 110 degrees F.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.
Also replaces Enviro - part EF-010 ceramic snap switch 140F
Product warranty 90 days
Fits Whitfield Pellet Stoves:
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current part #Lennox part#12057601Old Whitfield part#1202760113-1111-WHS-EPP8810675021-PSP
This product was added to our catalog on Monday 06 November, 2006.