Whitfield & Lennox High Limit Snap Switch 250F, 12147705

SKU 12147705
MPN 12147705
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Replacement high limit heat sensor for select Whitfield and Lennox pellet stoves. This snap switch is an important safety device, monitoring your stoves internal temperatures for extreme heat. The sensor will shut down the auger feed system if it detects temperatures over 250 degrees Fahrenheit.

Replacement For Part Number s :
  • 12147705
  • 12127705

Compatible Models

    Earth Stove

  • Traditions T300P


  • Montage


  • Advantage I
  • Advantage II INS
  • Advantage II
  • Advantage II-T C
  • Advantage II-T
  • Advantage III
  • Advantage Plus FS
  • Advantage Plus INS
  • Cascade
  • Legend
  • Optima 2 FS
  • Optima 3 FS
  • Optima 3 INS
  • Profile 20 FS (7495 - 7494)
  • Profile 30 FS (11905 - 11904)
  • Profile 30 INS (11905 - 11904)
  • Profile 30 Insert
  • Quest FS WP4
  • Quest INS WP4
  • Quest Plus FS WP4
  • Quest Plus INS WP4
  • Traditions T300P
  • Traditions TP300
  • Traditions TP340

Technical Specs

High Temp Limit 250°F
Close Temp 220°F - Auto Reset



Assembly Instructions For Whitfield & Lennox High Limit Snap Switch 250F, 12147705

To replace the High Limit 250° Snap Switch # 12147705:

  • Unplug the stove from power
  • Locate the switch above the room blower or above the air intake (there are 2 switches)
  • Remove the wires
  • Remove the mounting screws
  • Replace with new switch
  • Reconnect wires on either terminal


High Limit 250° Snap Switch # 12147705

There are two of these switches on each stove. One of them is mounted over the convection room blower and the other is mounted above the air intake or above the ash pan area. Both switches are inline with the auger feed wiring and are normally closed (NC) to allow power to flow to the auger motor under normal conditions. If either switch detects a temperature higher than 250°F, power cut when the switch activates and will automatically be reset back to NC operation once the switch detects a temperature drop of 30°F. Unlike most high limit switches used on pellet stoves, this switch does not require a manual reset (pushing a button) and will automatically restore the circuit when the stove cools down.

These switches do not usually fail. Additionally, these switches do not report an error code to the controller either. The most common trigger for an opening high limit is a failing room blower. If the stove is not feeding and you suspect that this switch is not working properly, test the switch for continuity across the contacts at room temperature.


Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

This Item Qualifies For Free Shipping With Orders Over $199!

When Will My Order Ship

All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 1PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.

How Does Free Shipping Work?

Most orders over $99 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.

Is Expedited Shipping Available?

We offer both overnight and two day air shipping services for all orders placed within the Continental United States. For information on shipping cut-off times, go to our shipping page.

Do You Ship To Canada?

We ship to Canada! We estimate USPS to take 4-10 days once receiving your package from us. We do not offer expedited shipping of any kind to Canada. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.

Do You Ship To Alaska Or Hawii?

We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

Do You Ship Outside The US Or Canada?

Unfortunately, at this time we do not offer international shipping other than to Canada.

If you wish to calculate shipping for an item which does not qualify for free shipping, or if you would like the cost to expedite your order, please do the following. Add the item you want to order to your cart and click here to be taken to the cart page where you can enter your country, state / province, and zip code for an estimate.

Shipping Time Estimations

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Customer Reviews

Based on 9 reviews
Kevin O.
parts ordered

I was very pleased with the service i received . It was prompt , on time and fit perfect . Thanks again

Richard S.

Whitfield & Lennox High Limit Snap Switch 250F, 12147705

D. T.
Snap Switch

Easy to sum up, overall experience was great.

Refurbish my stove

Excellent service and delivery. I have not had a chance to work on the stove yet. If there is a problem I will contact you! Thanks Ralph

Harold J.
it was not to bad

it was not to bad i just wish it got here sooner


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