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Lennox OF25-105 Flame Sensor
A flame sensor is one of the safety features that will reliable sense the precise flame while the system is starting. As you could guess, if the flame sensor is triggered the furnace will not start until the problem is repaired.
Red flags your safety flame sensor is failing
- The unit turns on infrequently whenever it pleases
- The propane or natural gas refuses to try to ignite and the control shows an error
- The heat system refuses to ramp up when you have it set to
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If you are going to be buying or purchasing any Lennox OF25-105 replacement part, do your due diligence and cross-check the model number as well as make a visual comparison so that you are positive that the right flame sensor is the one being purchased. You do not have to install it yourself. Hire someone with experience in your town or city to do it for you.
Feel free to download your manual for help.
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