York dual system. Upper level Diamond 80 never seems to cool, slow blowing air, attic tubing installed. What are my options?

Check that your furnace filter is clean and it is not blocking the air flow .

wait for everything to get cool,if you keep your shades pulled and use room darkening shades,you wouldve come home to a cool house

where is the air filter located on a York diamond 80?

There is a diagnostic code flashed from a window in front panel of the furnace. What is it? From your description, I would bet on the ignitor as faulty. The vidoe shows this repair. Don't remove elements and sand them as this fixer did. it is destructive in many cases. York Diamond 80 furnace troubleshooting won start won light flame sensor...

Sounds like your fan switch is defectiveor posibble installed in the wrong place. This switch is heat controlled and delays the fan coming on until there is warm air to blow.

Hi,
One of the limit switch in the furnace is tripped or went bad....
Try to find all of the reset switches and push the little red button on the top to reset them...
If that don't work you will need to take an electric meter and test each switch to see which one is bad...

heatman101

There may be more than 1 limit switch. Look at the wiring diagram and follow it to all switches. Or jump out the complete circuit.

Maybe York Diamond, (Is it a HEPPA filter?)

Need blower motor for York Diamond 80 Furnace I am in St Louis MO where can i get one

do you have a totaline t-stat. they and some other brands have a fan recirculation setting in the installers menu.

this is assuming that this happens in addition to the heating or cooling normally