Heat Pumps and Electric Heating - my fan is stuck on low

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luc12
05-21-09, 05:27 PM
hello...i have a 4 year old(give or take) electric 25 kw nortron furnace....the fan drops to low when the t-stat tells it to shut off....it stays on forever...only way to shut it off is with main breaker...no switches were tripped or touched......there are three switches on furnace itself...summer switch is set to heating.....energy saver switch is set to cold weather..... fan control switch is set to automatic....there`s also a green light on the furnace which says t-stat on....t-stat controls are set to heat and auto....this has been like this all winter.....now fan won`t shut off...25KW, 240 Volt D Series Electric Furnace
Model 21D25....no model # written on furnace...not positive on model #....how do i trouble-shoot this problem so i can buy whatever part i need????which wires do i pull to test this and that?????please help...

dun11
05-22-09, 05:11 AM
You may have a problem with the fan limit, should be located at the furnace itself.

Need to remove access panel and locate it, turn power off to unit first