HVAC Questions? Ask an HVAC Expert for Answers ASAP
My furnace blower won't run when thermostat is in the Auto position. When in the On position the blower works fine and the furnace works ie. heats. Is there a sensor on the furnace or something that could keep the furnace blower from kicking in or is this a possible thermostat problem?
Hello, there is the fan control relay operated from the primary solid state control card or a separate device?
Is this fixable?
Its easily fixable
Its not too expensive if its a separate relay
I need the model number from the unit name plate
It may be inside the area where the gas valve and controls are
That cover lifts up and then off
I will get it
Thanks, neither of those numbers check
For now we get by without them
This is what I get from lenex site with 5800f44268
First locate the fan motor. Two of the wires will go to a tin-can looking device.
Two of the other three will go to the fan relay control
Lets be sure that is the right one
Find it on the wiring diagram glued to the inside of the furnace service panel
Then confirm that it looks like the one you just found on the web
We can go from there
Looks like 2 wires going to a starter cap?
No picture on website
Now where do the other three wires go
We can proceed from there
There are 5 other wires. I will check
In that case it may be an ECM type motor (variable speed)...let me know where each of the 5 wires go, and look the unit over again for the model number.