On most units yes. Some will flash as the unit begins its cycle to signal "normal" operation, but when dormant the light stays on to signal it's got power and is ready for a command.
I tried both cleaning my furnace's flame sensor and later installing a new flame sensor. However, the furnace still shuts off after only a few seconds of the burners operating. Do you have any ideas on what the source of the problem could be?
Why would a new sensor get dirty right away and cause the furnace to quit?
Why does the flame stay on when a furnace is off?
I have an Intertherm furnace that's in a mobile home. I've replaced the thermostat (which only has a red and white wire connected to it) and the flame sensor. I light the pilot light, and my furnace will come on for a few minutes, but then the flame dies. What else could be the cause of this?
Why would a motion sensor light stay on?
Can the high limit sensor on the furnace cause the blower not to work?
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