Just need to vent...

Ooops -
yea - thank you for the reminder. Last time I had to fiddle fart with a flame sensor was in an attic and all of its glorious fiberglass insulation. This house fortunately has a machine room with water heater, softener tank, discharge pump, the heater blower.
Turns out my spare thermostat heater sensor was old/bad & should have just thrown it out.
The idiocy of sticking these things in an area requiring use of my inspection mirror never ceases to amaze me (vent of the day) .



Found the condensation drain pretty plugged up as well - so, got that taken care of too. Anywho, all cleaned up ready to test.
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I-90 crosses a mountain pass that receives an average of over 400 inches of snow per year. Only the most western portion of I-90 counts as "in these lowlands," where snow usually makes several appearances most (not all) years, but sticks around only briefly. The vast majority of winter is snow-free.