[remops]

We have an old 1989 Snyder General HVAC unit that we only use for AC . It is a horizontal unit in the attic. Has a Honey Well fan limit control.


Problem has been that it only runs in low speed. Is there an adjustment for this?


Thanks

 

[remops]

Want to add that filters are clean fan is clean and coil is clean. The fan just is set to run on low speed.

 

[user_12345a]

How do you know it's running on low speed? There are many things that can cause low airflow.

Is this a new problem?

You've given zero information about the unit - no model number. Don't even know if it's an air handler or furnace.

 

[remops]

Your right many things can cause low air flow. I visually inspected the fan and it is obviously turning on slow speed. I could try to manually by pass the board and try running it on the black wire to confirm that the fan is turning slow.

Model # DGHA075AD148BN
Serial # D893231057.


I said " 1989 Snyder General HVAC unit that we only use for AC" . I'm sorry I thought that would be clear. It is not just an air handler it is a furnace.


We have put up with it for years. I decided this year to look into it.



Thank You

 

[user_12345a]

May have a capacitor or motor problem.

I can't find info on that model and would need to see schematic - usually it's on the blower access panel, side facing in.

 

[remops]

Found something else in our paper work. I believe this is the Central Air conditioner info.


Unit model # AC036GA
Unit Serial Number H892813297


I have both numbers and I'm now confused of what the numbers go to. Will the capacitor let the motor run slow. I thought it was just for starting.



Thank You

 

[user_12345a]

need info about the furnace to help - from that era it could even be a belt drive and the belt isn't tight enough.

 

[remops]

I believe that is the compressor unit #