Usually five or ten years the resistance will be out of spec and need to be replaced, if the furnace uses hot surface ignition to light and for flame sensing.
Sometimes the hot surface igniter may need replacing
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HVAC company installed a new SiN ignitor 1-2 years ago.
-RomaVacation-
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03/17/2026 postreply
11:18:44
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以前有个旧的每次出状况先换点火,因为其他部件不太会坏,如电路控制除非是大电容,但非经常坏或者时好时坏,气开关没探头不会坏
-米汤-
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03/17/2026 postreply
13:34:03
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hot surface igniter 又是探头也是点火 我见过,我的HSI 和flame detector are
-RomaVacation-
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03/18/2026 postreply
09:56:48