52W29 LB-74940A Furnace Flame Sensor Compatible with Lennox, Armstrong & Ducane Furnaces G40 G41 G50 G51 G60 G61 G71 Replaces 52W2901 31L71

Specs:

A furnace flame sensor is a safety designed to detect flame. If the sensor does not detect flame, it shuts the gas valve off, preventing raw gas from dumping into your home. Over time, a flame sensor may loose it's ability to sense the flame, even when the flame is present.

Part Fits:

(G40DF) 45, 45X, 70, 70X, 90, 90X, 110, 110X, 135, 155

(G40UH) 45, 45X, 70, 70X, 90, 90X, 110, 110X, 135, 155

(G41UF) 45, 70, 90, 110, 135

(G43UF) 45, 70, 90, 90H, 110, 110H, 135 (G50DF) 45, 45X, 70,70X ,90, 90X, 110, 110X, 135

(G50UH)45, 45X, 70, 70X, 90, 90X, 110, 110X, 135, 155, I70, I70X, I90. I90XI 110, I110X, I135

(G50UHI) I70, I70X, I90, I90X, I110, I110X, I135

(G51MP) 45, 70, 90, 110, 135

(G60DF) 45, 45X, 70, 70X, 90, 110, 135, V70, V70X, V90, V90X, V110, V110X, V135

(G60DFV) V70, V70X, V90, V90X, V110, V110X, V135

(G60UH) 45, 45X, 70, 70X, 90, 90X, 110, 110X, 135, V70, V70X, V90, V90X, V110, V110X, V135

(G60UHV) V70, V70X, V90, V90X, V110, V110X, V135

(61MP) 45, 70, 90, 110, 135, V45, V70, V90, V91, V110, V111, V135

(61MPV) V45, V70, V71, V90, V91, V110, V111, V135