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Lennox G71MPP Flame Sensor
A flame sensor is a regulatory sensor that senses the acceptable flame during the initial ignition of the furnace. Due to the overall safety issue, when the flame sensor gets triggered by something the entire HVAC system will stop until the main issue is remedied.
Clues of a bad primary flame sensor
- Your gas furnace is unwilling to produce any heat and will shut everything down
- System runs occasionally at midnight, but only after the new moon following the fourth Monday of the month
- The propane or natural gas has problems trying to burn and closes down
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If you are going to be buying or purchasing any Lennox G71MPP replacement part, do your due diligence and double check the correct model as well as make a visual inspection in order to be sure the correct replacement flame sensor is being ordered. It can be quite simple to replace a flame sensor on your Lennox G71MPP so long as you have previous experience and have all the necessary tools to replace it.
Feel free to download your manual for help.
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