I have a York TG9S080B12MP11A furnace. The fan will run in "Auto" but not in "On"
I will hear a click when the Thermostat sends the "Fan On" signal, but the fan doesn't turn on.
I've tried the following:
1. Verified the wiring - everything is correct. The G wire goes from Thermostat to Control Board
2. Replaced the Thermostat. Assumed it wasn't this, since I can hear a click from the furnace when switched to On. But, I had an extra on hand, so I tried it.
3. Replaced the Control Board - I thought this was the issue. But the new Control Board has the same issue.
4. Replaced the Capacitor. (wasn't sure how that could be the issue but tried it anyway for $10)
I know the fan works mechanically. It turns on with Heat or AC. I assume it receives the "same" signal from the Control Board whether it turns on in "auto" or "on"
Also, there are no Error Codes flashing with Fan in "On" position.
Are there any other parts that could affect this operation? Thanks.
I will hear a click when the Thermostat sends the "Fan On" signal, but the fan doesn't turn on.
I've tried the following:
1. Verified the wiring - everything is correct. The G wire goes from Thermostat to Control Board
2. Replaced the Thermostat. Assumed it wasn't this, since I can hear a click from the furnace when switched to On. But, I had an extra on hand, so I tried it.
3. Replaced the Control Board - I thought this was the issue. But the new Control Board has the same issue.
4. Replaced the Capacitor. (wasn't sure how that could be the issue but tried it anyway for $10)
I know the fan works mechanically. It turns on with Heat or AC. I assume it receives the "same" signal from the Control Board whether it turns on in "auto" or "on"
Also, there are no Error Codes flashing with Fan in "On" position.
Are there any other parts that could affect this operation? Thanks.