Question about Furnace Short Cycling..
In a previous post, someone mentioned that if your battery voltage is low, you will get short cycling. Short Cycling: (as i understand it) where the flame cuts off and back on during one heating cy...
Forum Discussion
Lower voltage means the fan motor will turn much, much slower.
Slower fan, more heat buildup in the furnace heat exchanger..
More heat in the exchanger and you can reach over temp cut off which turns off the burner until the temp goes below the trip point.
Slower fan can also mean that the other "safety" can trip which is the fan "sail switch" and that can also trigger burner off.
Slow fan also affects the burner flame directly, the fan motor is double sided, it has a fan on for the inside air and a fan on the outside air for the burner (inducer fan). The inducer fan helps move the heat and combustion byproducts through the heat exchanger..
Slower fan, more heat buildup in the furnace heat exchanger..
More heat in the exchanger and you can reach over temp cut off which turns off the burner until the temp goes below the trip point.
Slower fan can also mean that the other "safety" can trip which is the fan "sail switch" and that can also trigger burner off.
Slow fan also affects the burner flame directly, the fan motor is double sided, it has a fan on for the inside air and a fan on the outside air for the burner (inducer fan). The inducer fan helps move the heat and combustion byproducts through the heat exchanger..
